curl -X POST 'baseUrl' -H 'Content-Type: application/json' -d '{"SaleToPOIRequest":{"MessageHeader":{"ProtocolVersion":"3.0","MessageClass":"Service","MessageCategory":"Payment","MessageType":"Request","SaleID":"saleId","ServiceID":"serviceId","POIID":"poiId"},"PaymentRequest":{"SaleData":{"SaleTransactionID":{"TransactionID":"$timestamp","TimeStamp":"$isoTimestamp"},"SaleToAcquirerData":"tenderOption=ReceiptHandler\u0026applicationInfo.merchantApplication.name=NAME_OF_POS_APPLICATION\u0026applicationInfo.merchantApplication.version=2.13.05\u0026applicationInfo.externalPlatform.name=COMPANY_NAME_OR_PLATFORM_NAME\u0026applicationInfo.externalPlatform.version=1.3\u0026applicationInfo.externalPlatform.integrator=COMPANY_THAT_BUILT_INTEGRATION_OR_POS_APP\u0026applicationInfo.merchantDevice.os=OS_OF_DEVICE_THAT_RUNS_POS_APPLICATION\u0026applicationInfo.merchantDevice.osVersion=16.3\u0026metadata.someMetaDataKey1=YOUR_VALUE\u0026metadata.someMetaDataKey2=YOUR_VALUE","OperatorID":"Sara","ShiftNumber":"2"},"PaymentTransaction":{"AmountsReq":{"Currency":"currency","RequestedAmount":20}}}}}'