{
  "manageEntity": {
    "action": "Update",
    "entityId": "990308344",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2fc57if37th2dyjgxpp6bwwbaid6ly7zp56be72fmnjabof76nqq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":78544},{\"type\":\"playlist\",\"playlist_id\":114524},{\"type\":\"playlist\",\"playlist_id\":89444611},{\"type\":\"playlist\",\"playlist_id\":1409111351},{\"type\":\"playlist\",\"playlist_id\":114523}]}}}",
    "nonce": "0x1dfa19d38a4d77f34216da5d227da42549d69df9f1d93de347422e6be218a9c9",
    "signature": "0xe059cde94d771b3b44b9f8315e92405130655be58c46617340d1698920288f5b38d2502fc8bcb63774cb198dda7d44fda1269d4b89ae99e31c5eace77f06235c1b",
    "signer": "0xb23FFd6D016E95A4022Fbe25C4a1179AF8492788",
    "userId": "990308344"
  }
}