{
  "manageEntity": {
    "action": "Update",
    "entityId": "498611290",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieray3gqk4hy5xfxi7wvv2gkgk4wzil6gbdhx3tm3zhl6xgklod6m2pa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":625096490}]}}}",
    "nonce": "0xaf1134cd35d64e97dde8be1217e0041e1e84e01a97e783f33899a24de26cb382",
    "signature": "0xd1d3476b8e92037909635ce62e8988c8ba7083ea1d758a4acc9337d0056a79b10732de091c23dffa67e4e9bb1c891701357903c6c73b00961f3e0c7c69e983521c",
    "signer": "0xE5B01ffC0f6C8237F3F8e55b3c67A263E1f9a4f5",
    "userId": "498611290"
  }
}