curl -X GET 'https://app.yampi.ai/api/v1/accounts/1/contacts/10' \
  -H 'api_access_token: TU_TOKEN' \
  -H 'Content-Type: application/json'

{
  "payload": {
    "id": 10,
    "name": "Alice",
    "email": "alice@acme.inc",
    "phone_number": "+57300123456",
    "identifier": "cliente-001",
    "thumbnail": null,
    "blocked": false,
    "custom_attributes": {},
    "contact_inboxes": [],
    "labels": []
  }
}