nova/doc/api_samples/os-server-external-events/event-create-req.json

{
    "events": [
        {
            "name": "test-event",
            "tag": "foo",
            "status": "completed",
            "server_uuid": "3df201cf-2451-44f2-8d25-a4ca826fc1f3"
        }
    ]
}