curl --request GET \
  --url https://api.example.com/api/ActivityTemplates/{templateId}

{
  "id": 123,
  "ownerID": 123,
  "ownerName": "<string>",
  "name": "<string>",
  "activityTypeIds": [
    123
  ],
  "statusID": 123,
  "statusName": "<string>",
  "text": "<string>",
  "deleted": true,
  "deletedDate": "2023-11-07T05:31:56Z",
  "deletedByUserID": 123,
  "deletedByUserName": "<string>"
}