keystone/api-ref/source/v3/samples/admin/role-update-response.json

{
    "role": {
        "id": "1e443fa8cee3482a8a2b6954dd5c8f12",
        "links": {
            "self": "http://localhost:5000/v3/roles/1e443fa8cee3482a8a2b6954dd5c8f12"
        },
        "name": "Developer"
    }
}