Usergroup collection

{
  "items":[
  {
    "id": 2,
    "properties": {
      "GroupName": "Everyone"
    },
    "relations": {
      "UserGroupToUser": {
      "href": "http://m.local/api/entities/2/relations/UserGroupToUser"
      }
    },
    "created_by": {
      "href": "http://m.local/api/users/0",
      "title": "The user who created the entity"
    },
    "created_on": "2014-03-23T13:47:29.8058106Z",
    "modified_by": {
      "href": "http://m.local/api/users/0",
      "title": "The user who last modified the entity"
    },
    "modified_on": "2014-03-23T13:47:29.8058106Z",
    "entitydefinition": {
      "href": "http://m.local/api/entitydefinitions/UserGroup",
      "title": "The entity definition for this entity"
    },
    "copy": {
      "href": "http://m.local/api/usergroups/2/copy",
      "title": "Copy this entity"
    },
    "permissions": {
      "href": "http://m.local/api/usergroups/2/permissions",
      "title": "The permissions on this entity"
    },
    "lifecycle": {
      "href": "http://m.local/api/usergroups/2/lifecycle",
      "title": "The lifecycle action for this entity."
    },
    "policy": {
      "href": "http://m.local/api/usergroups/2/policy",
      "title": "The policy that applies to this user group."
    },
    "self": {
      "href": "http://m.local/api/usergroups/2",
      "title": "This entity"
    }
  },
    ...
  ],
  "total_items":38,
  "returned_items":25,
  "self":{
    "href":"http://<hostname>/api/usergroups"
  },
  "next":{
    "href":"http://<hostname>/api/usergroups?skip=25"
  }
}