{
  "manageEntity": {
    "action": "Update",
    "entityId": "137483858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xca08283a20f98477adb72ac69ae74d5fa51725d7682a9b02e239ae5cc65f8362",
    "signature": "0x5a2a4fddfeccf52c193afb16f75d7e10da9fe125624e6451ad15bfc7781bf5d7396c3e96a56be89e1aa0c8f033549cc93f4980cc911721f6b3682bc24fe632821c",
    "signer": "0x5c0018A404Bc0c2e21DB5D0BeF817dd28ca043c4",
    "userId": "137483858"
  }
}