{
  "manageEntity": {
    "action": "Update",
    "entityId": "675418207",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraawqn2vag2v54h4xvgmmhaswfkcctonrcoc4cr2hcmpbyk3btshnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":916007771},{\"type\":\"playlist\",\"playlist_id\":957908575},{\"type\":\"playlist\",\"playlist_id\":560380602},{\"type\":\"playlist\",\"playlist_id\":1996984016},{\"type\":\"playlist\",\"playlist_id\":1659363293}]}}}",
    "nonce": "0x3f6bd9167b9e3dd98e6a683cca6c43afe4a47d854ae39a0d87e73311bfbd49cd",
    "signature": "0x1a21cce67518d6b59cd6a87bff10dfe3b281ce22bf947685d451bda07636c32c1bed2869ea89db2966037058764f530e4df4b73cf5520eb358b1708bcddc076f1c",
    "signer": "0x4121721A98A8e0B9303c35E59911ec4a8B7F2dE1",
    "userId": "675418207"
  }
}