curl --request POST \
  --url https://api.upwell.com/api/rest/bulk-customer-payments \
  --header 'Content-Type: application/json' \
  --data '
{
  "inputs": [
    {
      "checkDate": "2023-12-25",
      "checkOrAchNumber": "<string>",
      "createdAt": "2023-11-07T05:31:56Z",
      "currency": "AED",
      "id": "<string>",
      "paymentLineItems": {},
      "sourceSystem": "<string>",
      "sourceSystemId": "<string>",
      "sourceSystemMeta": "<unknown>",
      "tenantId": "<string>",
      "totalAmount": 123,
      "transactionDate": "2023-12-25",
      "updatedAt": "2023-11-07T05:31:56Z"
    }
  ]
}
'

{
  "createCustomerPayments": {
    "returning": [
      {
        "checkDate": "2023-12-25",
        "checkOrAchNumber": "<string>",
        "createdAt": "2023-11-07T05:31:56Z",
        "currency": "AED",
        "id": "<string>",
        "paymentLineItems": [
          {
            "createdAt": "2023-11-07T05:31:56Z",
            "customerId": "<string>",
            "id": "<string>",
            "invoiceId": "<string>",
            "sourceSystem": "<string>",
            "sourceSystemId": "<string>",
            "status": "<string>",
            "totalAmount": 123,
            "updatedAt": "2023-11-07T05:31:56Z"
          }
        ],
        "sourceSystem": "<string>",
        "sourceSystemId": "<string>",
        "sourceSystemMeta": "<unknown>",
        "totalAmount": 123,
        "transactionDate": "2023-12-25",
        "updatedAt": "2023-11-07T05:31:56Z"
      }
    ]
  }
}