{
  "manageEntity": {
    "action": "Update",
    "entityId": "272809645",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf8427002adb24186ac63d286be143cb738e30346d7d0943de4b4f78552bc5a93",
    "signature": "0xcf0f94dec5bc4649fb0321c66c122d67657c289094165adbf2a50a62ed2eaf5130c76905d6f7dc088e72f1cc60ac8dfc04058496a6d55ea170521eeefaeaafeb1b",
    "signer": "0x519f59B3efef0Df45928E79086d979C0C4A40Fee",
    "userId": "272809645"
  }
}