get Access Control Policy Groups

Example response

[
  {
    "id": 10,
    "account_id": 123,
    "name": "some_policy_group",
    "taggable_name": "some_policy_group",
    "description": "some_policy_group_description",
    "policy_count": 1,
    "created_at": "2012-01-01T12:00:00Z",
    "updated_at": "2012-01-01T12:00:00Z"
  }
]