{
  "manageEntity": {
    "action": "Update",
    "entityId": "668479312",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierafdzq7zarwodavojadvbx5spojoznqtcdwwuaaebov7cypwxx7rbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1101286144},{\"type\":\"playlist\",\"playlist_id\":503586393},{\"type\":\"playlist\",\"playlist_id\":1719916427}]}}}",
    "nonce": "0x5235da033fd0a5754888c9a97a09f1b66fcaab18e4ac01ca90c80e6e55f3ea64",
    "signature": "0x492891297fd0e454d8d179a8b7bff54cd10e9f2e15310064ec2005a433baa51517c48bd18d6188e5eb47904785d4595b574601ae0eec3e52663113dfc1e95b2f1c",
    "signer": "0x85B1B971C5fe67452C1B05674372A79112F62292",
    "userId": "668479312"
  }
}