{
  "manageEntity": {
    "action": "Update",
    "entityId": "513109515",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x32c7156e21e234faf8a19658a4daff85fd3d3ccb00f7942a01703dc7b1256379",
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    "signer": "0xB37e68c133ea69671cCAC0650D43A5e87451094c",
    "userId": "513109515"
  }
}