{
  "manageEntity": {
    "action": "Update",
    "entityId": "441723440",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradf6bi33zuzx5dgch2pbtt5fhrykxa5i4n4u647xjo52gon6di53a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":309956272},{\"type\":\"playlist\",\"playlist_id\":1322296520},{\"type\":\"playlist\",\"playlist_id\":804729172}]}}}",
    "nonce": "0xb0d77b12b47d479b7504b68158afcf1282df7578a1eea9f4326b965a19678c3f",
    "signature": "0xc59e03beece313bd14f328753933aa4796fd4fb137d57a3d5c1fd038431aacb64cacf49908b243709b7fed967fb8e8c049295e664a3c889b43a286f3421641dc1c",
    "signer": "0x876e8E637870eF830ef50f2015B0FA57Cc0811A9",
    "userId": "441723440"
  }
}