Triggered when a WABA chat is reopened.

Example payload

{
  "event_type": "waba:chat:incoming",
  "chat": {
    "id": 90155,
    "waba_account_id": 4821
  },
  "account": {
    "id": 4821,
    "meta_phone_id": "109876543210987",
    "meta_waba_id": "102233445566778"
  },
  "responsible": {
    "name": "Agent Brown",
    "email": "agent-brown@example.com"
  }
}