{
  "manageEntity": {
    "action": "Update",
    "entityId": "441723440",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera6g7tx3kpv47c5l44w6xf27c3oznkm73q2f33rkh7e3lfzdzh6sta\",\"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},{\"type\":\"playlist\",\"playlist_id\":341135708}]}}}",
    "nonce": "0x533f7db928425d78f12d0162665cc413f2d0783970af29bea824bda969c39d75",
    "signature": "0x6ed8ccefef58115b3d4c64ec04f5dceb7a3ceb48d497f754aefe2ce06f41cd584aac311e0ee29d45e8753ab665510c222017584d6bec1eef8ae0f6a5453a41eb1b",
    "signer": "0x876e8E637870eF830ef50f2015B0FA57Cc0811A9",
    "userId": "441723440"
  }
}