nova/doc/api_samples/os-security-groups/server-post-resp.json

{
    "server": {
        "adminPass": "QmKpgBk7izBM",
        "id": "3ad37a3a-d5c4-40ab-9bff-af5b66a0e35b",
        "links": [
            {
                "href": "http://openstack.example.com/v2/openstack/servers/3ad37a3a-d5c4-40ab-9bff-af5b66a0e35b",
                "rel": "self"
            },
            {
                "href": "http://openstack.example.com/openstack/servers/3ad37a3a-d5c4-40ab-9bff-af5b66a0e35b",
                "rel": "bookmark"
            }
        ],
        "security_groups": [
            {
                "name": "default"
            }
        ]
    }
}