{
  "event": "message_created",
  "message_type": "incoming",
  "content": "Jaki jest status mojego zamowienia 12345?",
  "id": 9999,
  "conversation": {
    "id": 1310,
    "labels": [],
    "inbox_id": 1,
    "additional_attributes": { "mail_subject": "Pytanie o zamowienie" }
  },
  "sender": {
    "id": 332,
    "name": "Jan Kowalski",
    "email": "jan@example.com"
  }
}