{
  "manageEntity": {
    "action": "Update",
    "entityId": "816796520",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x64a24b5f19dbb11c5790152e5d5cdbeabe608b7b7c07330e3bd571b25acb4062",
    "signature": "0x6c84cd8c3e6643c1d5c29e3655606913298a31f6de1111c4fb89973cba0d73da539a7395ccce882ee3edfadff289ff0902c2c91b62aa7803db94e509e1fef46c1c",
    "signer": "0xffB35A7fb70de85Fc6641863EDD49bA203945e57",
    "userId": "816796520"
  }
}