TimelineEvent

{
    "event": "created",
    "from_status": "string",
    "to_status": "string",
    "actor_id": "string",
    "actor_role": "reporter",
    "message": "string",
    "metadata": {
        "property1": "string",
        "property2": "string"
    },
    "timestamp": "2019-08-24T14:15:22.123Z"
}