{
  "manageEntity": {
    "action": "Update",
    "entityId": "441723440",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradu622kw2klyksjzkduvtvzjujrmaudfcyoeqpawfzya6qus55o4q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":309956272},{\"type\":\"playlist\",\"playlist_id\":1322296520}]}}}",
    "nonce": "0x0671f65c0550e371b20640075ddab7b7a011c3f190b60a2f16e88c69fd82350e",
    "signature": "0x4426d2c584a490c4def622c91c40266d77911152a8577cd67417ad046b420009433a4e1db3fe0da64afff12e79e5a5ea7ef97665554f41aea807601578bdfe451b",
    "signer": "0x876e8E637870eF830ef50f2015B0FA57Cc0811A9",
    "userId": "441723440"
  }
}