curl --request POST \
  --url https://api.fint.app/api/v1/contact \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "externalReference": "<string>",
  "name": "<string>",
  "lastName": "<string>",
  "documentType": "DNI",
  "documentNumber": "<string>",
  "email": "jsmith@example.com",
  "phoneNumber": "<string>",
  "address": "<string>",
  "country": "<string>",
  "metadata": {},
  "payerContact": {
    "name": "<string>",
    "lastName": "<string>",
    "documentType": "DNI",
    "documentNumber": "<string>",
    "email": "jsmith@example.com",
    "phoneNumber": "<string>",
    "address": "<string>",
    "country": "<string>"
  },
  "tagGroup": {
    "name": "<string>"
  },
  "tags": [
    {
      "name": "<string>"
    }
  ],
  "sendPortalInvite": true
}'

{
  "id": 123
}