curl --location --request GET 'https://api.cash-in.com/v2/electronicinvoicingcontracts?receiverIdentifier' \
--header 'X-Api-Key: <api-key>'[
{
"SellerOrgUnitNumber": "string",
"SellerPartyId": "string",
"ReceiverIdentifier": "string",
"ReceiverName": "string",
"ReceiverAccountNo": "string",
"ReceiverIntermediator": "string",
"ReceiverServiceCode": "string",
"ReceiverInfoTimestamp": "string",
"ReceiverInfoType": "string",
"ReceiverInfoTypeCode": "string",
"DateCreated": "2019-08-24T14:15:22.123Z",
"PaymentInstructionId": "string",
"ApiFetchDate": "2019-08-24T14:15:22.123Z"
}
]