{
  "manageEntity": {
    "action": "Update",
    "entityId": "6838510",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranavjfvdf4lbfhd4a4g554hewvqexshg4qxmkyw4jqhyiijoiayka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":46674903}]}}}",
    "nonce": "0x05cd03ce807c2ef796467cec80c72c941b03dfad80633964e44b8dd0fa659284",
    "signature": "0x82d7951f987481ba8136f5ac8dca08461be47e95f5b2649a10a45c24651fbd05118227e31543f5fb5e44c3def0333522b4fc627bb4559f353250bb66423b57eb1b",
    "signer": "0x58Fd15cF8652ad74664BE5E78b4D09ab32Ce73Bd",
    "userId": "6838510"
  }
}