curl --request POST \
  --url https://sandbox.hurdlr.com/rest/v4/invoicing/sendInvoice \
  --header 'Authorization: Bearer <token>'

{
  "arInvoiceId": "<string>",
  "arInvoiceName": "<string>",
  "success": true,
  "errorDescription": "<string>",
  "emailRetVal": {
    "status": "SUCCESS",
    "error": "<string>",
    "messageId": "<string>"
  },
  "errors": {
    "fieldErrors": {},
    "globalErrors": [
      {
        "type": "DUPLICATE",
        "errorMessage": "<string>"
      }
    ]
  },
  "refundStatus": "PENDING"
}