UserDataChangedMessage

{
    "Data": {
        "UserId": "08ba1929-681e-4b24-929b-9245852f65c0",
        "UserDataList": [
            {
                "Rating": 0,
                "PlayedPercentage": 0,
                "UnplayedItemCount": 0,
                "PlaybackPositionTicks": 0,
                "PlayCount": 0,
                "IsFavorite": true,
                "Likes": true,
                "LastPlayedDate": "2019-08-24T14:15:22Z",
                "Played": true,
                "Key": "string",
                "ItemId": "72c5b8e6-e1df-4333-8b97-b60452e2cca5"
            }
        ]
    },
    "MessageId": "bf11ea83-f95d-495f-ad36-6a0d6217aaf6",
    "MessageType": "ForceKeepAlive"
}