curl --request GET \
  --url https://{install}/api/template/content \
  --header 'Authorization: Bearer <token>'

[
  {
    "entity": "<string>",
    "name": "<string>",
    "description": "<string>",
    "owner": 123,
    "isSystem": true,
    "variant": [
      {
        "locale": "<string>",
        "text": "<string>"
      }
    ],
    "tenantId": "<string>",
    "id": "<string>",
    "created": "2023-11-07T05:31:56Z",
    "createdBy": "<string>",
    "updated": "2023-11-07T05:31:56Z",
    "updatedBy": "<string>",
    "deleted": true
  }
]