WebhookEvent

{
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "type": "message.received",
    "api_version": "v1",
    "occurred_at": "2019-08-24T14:15:22.123Z",
    "data": {
        "property1": "string",
        "property2": "string"
    }
}