{
    "alert_type": "RETRACTION",
    "time_created": "2018-11-01T23:36:23Z",
    "superevent_id": "MS181101ab",
    "urls": {
        "gracedb": "https://example.org/superevents/MS181101ab/view/"
    },
    "event": null,
    "external_coinc": null
}