{
  "manageEntity": {
    "action": "Update",
    "entityId": "171594868",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarxaiehfmxrlhuneog6rt7nbhotmprmc6h23ogltegivmamwkkiia\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":177905104},{\"type\":\"playlist\",\"playlist_id\":1694618767},{\"type\":\"playlist\",\"playlist_id\":971818751},{\"type\":\"playlist\",\"playlist_id\":1516513995},{\"type\":\"playlist\",\"playlist_id\":1586468717}]}}}",
    "nonce": "0x19eb4b94be661c33f46be207200d4561924e2c611248426df071183c89e099e4",
    "signature": "0x8506f6f6fea2530754c6ffca9786be78e628af1387a41b0c19558f83190e9bc0711ae43c03701a4c3cd772d960d4441fbb7c47a0e4593914001d6490b52731bc1c",
    "signer": "0x9C1F89CDE33F8110394DfA4a5Af51201f8Ee41fB",
    "userId": "171594868"
  }
}