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Send Contract

Parameters

  • contractAddress - string Contract address to interact with
  • functionName - string Smart contract function to interact with
  • abi - Array<AbiItem> (Optional) ABI of the contract to call
  • params - Array<string> (Optional) Params to call the smart contract function with
  • valueInWei - string (Optional) Amount of wei to send
  • gasLimit - string (Optional) Gas limit for the function call
  • chain - Object used to ensure the user is on the correct chain (follows the MetaMask specification)
    • chainId - string Base 10 string matching the chain id on Chainlist​
    • chainMetadata (Optional) - Object used to add the chain if the user does not have the chain added to their wallet
      • chainName - string
      • nativeCurrency - Object
        • name - string is the currency's name
        • symbol - string 2-6 characters long symbol for the chain
        • decimals - 18
      • rpcUrls - Array<string> is an array of rpc node urls that can be used to make requests. We recommend selecting a few from the listing on Chainlist​
      • blockExplorerUrls (Optional) - Array<string> is an array of block explorers that can be used with the chain
      • iconUrls (Optional) - Array<string> is currently unused by MetaMask

Request

This request sends ERC-20 tokens.
curl
Unity
Unreal Blueprints
Unreal Engine C++
curl --location --request POST "localhost:9680/sendContract" \
--header 'Content-Type: application/json' \
--data-raw '{
"contractAddress": "0xc657c7ca0f06b9c241a080AC0d6625923Ef9f1aF",
"functionName": "transfer",
"params": ["0x638105AA1B69406560f6428aEFACe3DB9da83c64", "1000000000000000000"],
"abi": [{ "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transfer", "outputs": [{ "internalType": "bool", "name": "", "type": "bool" }], "stateMutability": "nonpayable", "type": "function" }],
"valueInWei": "0",
"chain": {
"chainId": "11155111"
}
}'
using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
​
public class SendContract: MonoBehaviour
{
void Start()
{
StartCoroutine(Send());
}
​
private IEnumerator Send()
{
string jsonString = "{ \"contractAddress\": \"0x8a9f58dea0cf3d92dd8963f5a0a4c7aa9fa76642\", \"functionName\": \"transfer\", \"params\": [\"0x638105AA1B69406560f6428aEFACe3DB9da83c64\", \"1230000000000000000\"], \"abi\": [{ \"inputs\": [ { \"internalType\": \"address\", \"name\": \"to\", \"type\": \"address\" }, { \"internalType\": \"uint256\", \"name\": \"amount\", \"type\": \"uint256\" } ], \"name\": \"transfer\", \"outputs\": [{ \"internalType\": \"bool\", \"name\": \"\", \"type\": \"bool\" }], \"stateMutability\": \"nonpayable\", \"type\": \"function\" }], \"valueInWei\": \"0\", \"chain\": { \"chainId\": \"5\" } }";
byte[] jsonBytes = System.Text.Encoding.UTF8.GetBytes(jsonString);
​
UnityWebRequest request = new UnityWebRequest("localhost:9680/sendContract", "POST");
request.uploadHandler = new UploadHandlerRaw(jsonBytes);
request.downloadHandler = new DownloadHandlerBuffer();
request.SetRequestHeader("Content-Type", "application/json");
​
yield return request.SendWebRequest();
Debug.Log(request.error);
string balanceHex = request.downloadHandler.text;
Debug.Log(balanceHex);
}
}
​
If you have the HyperPlay plugin installed, copy and paste the following into a Blueprint Graph for an example of how to send ERC20 tokens using the $FAU ERC20 contract deployed at 0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc on Goerli.
Begin Object Class=/Script/BlueprintGraph.K2Node_AsyncAction Name="K2Node_AsyncAction_16"
ProxyFactoryFunctionName="SendContract"
ProxyFactoryClass=Class'"/Script/web3Unreal.SendContract"'
ProxyClass=Class'"/Script/web3Unreal.SendContract"'
NodePosX=896
NodePosY=-288
NodeGuid=736B0028433ABAFA33026691B4CD1BBE
CustomProperties Pin (PinId=38AA37C847D0B443D4D293BC78AE1C45,PinName="execute",PinToolTip="\nExec",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=DBABCEAE4BE7212FDE45CA87A5164BE1,PinName="then",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=FF9139A840D4343BEEDA949AADC0F72F,PinName="OnResponseOutput",PinFriendlyName=NSLOCTEXT("", "1966ADE04DEFB57440E3F5ADC289127C", "On Response Output"),PinToolTip="On Response Output",Direction="EGPD_Output",PinType.PinCategory="exec",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=79B0FBA04193EB868B3E50954801E988,PinName="Response",PinToolTip="Response",Direction="EGPD_Output",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=31182EE9469AB941903076B47511EBCF,PinName="StatusCode",PinToolTip="Status Code",Direction="EGPD_Output",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=FBBCFB7F47F9D8C667951192E6A98CE8,PinName="WorldContextObject",PinToolTip="World Context Object\nObject Reference",PinType.PinCategory="object",PinType.PinSubCategory="",PinType.PinSubCategoryObject=Class'"/Script/CoreUObject.Object"',PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=True,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,PersistentGuid=00000000000000000000000000000000,bHidden=True,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=2061F93A49303CCDDE39F58467F27FF5,PinName="contractAddress",PinToolTip="Contract Address\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=8A22FDA84139B1DFDF8D81BD7C2854C1,PinName="functionName",PinToolTip="Function Name\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="transfer",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=968F51594CA2C970F9EFBF852CD3798B,PinName="abi",PinToolTip="Abi\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="[{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"DECIMALS\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"INITIAL_SUPPLY\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"mint\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"from\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"burnFrom\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"addMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"spender\",\"type\":\"address\"},{\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"to\",\"type\":\"address\"},{\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"isMinter\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"owner\",\"type\":\"address\"},{\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"fallback\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterRemoved\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}]",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=CEE087C54DD0A141448F8BB86ABAAB4A,PinName="params",PinToolTip="Params\nArray of Strings",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=Array,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,LinkedTo=(K2Node_MakeArray_1 BEE4822F4C280F86F45B7E9D7F4BDB5B,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=F33D7DF04277CAB9364D12BECCC6B328,PinName="gasLimit",PinToolTip="Gas Limit\nInteger",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="-1",AutogeneratedDefaultValue="-1",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=8CF144384AFEAD66DD508CA45BF43278,PinName="valueInWei",PinToolTip="Value in Wei\nString",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0",AutogeneratedDefaultValue="0",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=A2B1BA0C4268DB23AE4B3E9C46C44C34,PinName="chainId",PinToolTip="Chain Id\nInteger",PinType.PinCategory="int",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="5",AutogeneratedDefaultValue="1",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/BlueprintGraph.K2Node_MakeArray Name="K2Node_MakeArray_1"
NumInputs=2
NodePosX=896
NodePosY=-416
NodeGuid=2F2F421E44450CE8C0F62BB3E788BEC6
CustomProperties Pin (PinId=BEE4822F4C280F86F45B7E9D7F4BDB5B,PinName="Array",Direction="EGPD_Output",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=Array,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,LinkedTo=(K2Node_AsyncAction_16 CEE087C54DD0A141448F8BB86ABAAB4A,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=2EAC4E994F6545D4BE1767A36D0CF73E,PinName="[0]",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=3DE424384BF6B7230196A891E06B6AE8,PinName="[1]",PinType.PinCategory="string",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PinType.bIsUObjectWrapper=False,DefaultValue="1000000000000000000",PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
​
#include "HyperPlayUtils.h"
#include "Endpoints/SendContract.h"
​
void OnResponse(FString Response, int32 StatusCode)
{
const bool bWasSuccessful = HyperPlayUtils::StatusCodeIsSuccess(StatusCode);
​
UE_LOG(LogTemp, Display, TEXT("SendContract Success: %s"), bWasSuccessful ? "true" : "false");
UE_LOG(LogTemp, Display, TEXT("SendContract Response: %s"), *Response);
}
​
int main(){
const FString address("0x62bb848ec84D08d55Ea70a19118300bae6658F18");
const FString amount("100000000000000000000");
TArray<FString> params;
params.Add(address);
params.Add(amount);
USendContract* SendContractInstance = USendContract::SendContract(nullptr,
"0xBA62BCfcAaFc6622853cca2BE6Ac7d845BC0f2Dc",
"transfer",
"",
params,
-1,
"",
5);
SendContractInstance->GetOnCompletedDelegate().AddRaw(this, &OnResponse);
SendContractInstance->Activate();
}

Response

The transaction hash
Response
Error
0x1b8368d5b67a914a49c76984776849ee3c56a4ac28c92d98103ef18e7215ae2b
Errors will have an HTTP response status 500-599
{
"message": "error description here"
}