{
  "entry": [{
    "changes": [{
      "value": {
        "metadata": { "phone_number_id": "1234567890" },
        "messages": [{
          "from": "5491123456789",
          "type": "text",
          "text": { "body": "Prueba desde curl" }
        }]
      }
    }]
  }]
}