{
  "manageEntity": {
    "action": "Update",
    "entityId": "448151336",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraexfizxpfjkqd4d32qw4a63lehbgdceobhtmox5vibmrq5mhnnwrq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2041763848},{\"type\":\"playlist\",\"playlist_id\":225359288},{\"type\":\"playlist\",\"playlist_id\":551420752},{\"type\":\"playlist\",\"playlist_id\":728224983}]}}}",
    "nonce": "0xe2ad62a916f06382d4a272a26cb83831027de916114c341459353786c3493ca4",
    "signature": "0x97d81f3603bd7de0979961ee66bf81ad81255ccaa9735b5b033d8ecbd64f329c5df24fe574afa406c3ddf827ae692d346dd079a22a3275472e716d5ead86f41a1c",
    "signer": "0xbD7a3e84747148187384D49EED4F6728518e23Bc",
    "userId": "448151336"
  }
}