{
  "manageEntity": {
    "action": "Update",
    "entityId": "619112688",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x02a4ef7c277a85083a012466a44693ae22471b9aadf70f251de6422b1da09437",
    "signature": "0xe0aa34ac2cbfbf9f7b442c1170dae1742c93c4758cbcdae319566e7f159dd4c30a2265aae17d015bbf01b935b44b5891c93be8e13d33dee395ca8d8d30bffa971c",
    "signer": "0x4aE574382b0b09bBb498DbaCCea3A3C0914883c9",
    "userId": "619112688"
  }
}