WebhookEvent

{
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "type": "string",
    "created_at": "2019-08-24T14:15:22.123Z",
    "data": {
        "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
        "to": "user@example.com",
        "status": "queued"
    }
}