Return a template

Example response

{
  "data": {
    "app_id": "6c45fe5e-0bb6-41b9-9acc-ccb15bfc51eb",
    "body": "<p>Hello {{user.name}}, your booking has been confirmed.</p>",
    "created_at": 1640995200,
    "engine": "mustache",
    "grant_id": "6c45fe5e-0bb6-41b9-9acc-ccb15bfc51eb",
    "id": "b79c82b2-a51b-4c54-8469-28006a43551a",
    "name": "Booking confirmed message",
    "object": "template",
    "subject": "{{user.name}}, your booking is confirmed!",
    "updated_at": 1640995200
  }
}