{
  "category": [
    {
      "id": "http://tincanapi.com/conformancetest/activityid",
      "objectType": "Activity"
    }
  ],
  "parent": [
    {
      "id": "http://tincanapi.com/conformancetest/activityid",
      "objectType": "Activity"
    }
  ],
  "grouping": [
    {
      "id": "http://tincanapi.com/conformancetest/activityid",
      "objectType": "Activity"
    }
  ],
  "other": [
    {
      "id": "http://tincanapi.com/conformancetest/activityid",
      "objectType": "Activity"
    }
  ]
}