{ "aggregate": { "availability_zone": "nova", "created_at": "2013-08-18T12:17:55.959571", "deleted": false, "deleted_at": null, "hosts": [], "id": 1, "metadata": { "availability_zone": "nova", "key": "value" }, "name": "name", "updated_at": "2013-08-18T12:17:55.986540" } }