List Notification Templates

[
  {
    "body_html": "string",
    "body_text": "string",
    "created_at": "2019-08-24T14:15:22Z",
    "event_type": "string",
    "id": "string",
    "is_default": false,
    "is_outdated": true,
    "locale": "string",
    "subject": "string",
    "updated_at": "2019-08-24T14:15:22Z",
    "variables_schema": {}
  }
]