{
  "manageEntity": {
    "action": "Update",
    "entityId": "504521047",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierapdneu3vrwilzb4k5sqik7esr4roqbaq5af5af44oeehjqjo4yxnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":776291493},{\"type\":\"playlist\",\"playlist_id\":555289306}]}}}",
    "nonce": "0xc05f5c3966b533bee5e6a7eed03df86cce3a6c91c397a424bdd74c3cdfcabd2a",
    "signature": "0xdd312a6101f5f3e5d09ce64bff6219a6f3a19e870e7194846e5fbfc9d61b1f892246ca7fe370eb7045b7a0582e25789bc2158e91cddf97e0949999e4458112221c",
    "signer": "0x719Ef5BAeeC65BD1AF734819e6B29681722F15aa",
    "userId": "504521047"
  }
}