{
  "_version": "1.1",
  "msg_id": "00000000-0000-0000-0000-000000000000",
  "payload": {
    "_version": "1.2",
    "notification_name": "Custom Notification",
    "notification_template_id": "00000000-0000-0000-0000-000000000000",
    "user_id": "00000000-0000-0000-0000-000000000000",
    "user_email": "bobby@coder.com",
    "user_name": "Bobby",
    "user_username": "bobby",
    "actions": [],
    "labels": {
      "custom_message": "Custom Message",
      "custom_title": "Custom Title"
    },
    "data": {},
    "targets": null
  },
  "title": "Custom Title",
  "title_markdown": "Custom Title",
  "body": "Custom Message",
  "body_markdown": "Custom Message"
}