curl --request GET \
  --url https://api.fint.app/api/v1/payment/:paymentId \
  --header 'x-api-key: <api-key>'

{
  "id": 123,
  "date": "<string>",
  "totalAmount": "<string>",
  "contacts": [
    {
      "id": 123,
      "name": "<string>",
      "lastName": "<string>",
      "documentType": "<string>",
      "documentNumber": "<string>",
      "address": "<string>",
      "externalReference": "<string>"
    }
  ],
  "auditUser": {
    "id": 123,
    "name": "<string>",
    "lastName": "<string>",
    "email": "<string>"
  },
  "isManual": true,
  "payerContact": {
    "id": 123,
    "name": "<string>",
    "lastName": "<string>",
    "phoneNumber": "<string>",
    "whatsappNumber": "<string>",
    "email": "<string>",
    "documentType": "<string>",
    "documentNumber": "<string>",
    "address": "<string>"
  },
  "descriptions": [
    "<string>"
  ]
}