{
  "manageEntity": {
    "action": "Update",
    "entityId": "398213410",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x69b152228fff7155f65e780270d60c8b06f6aabd58f3323609954e8c66ae9db9",
    "signature": "0x13e635a75cc0eb513eb71e45e84cea447e3a69ab54980b6a235ee06a936827ae29cf08b9ea4f7eb1ccf937f45c5940ff5b365050bf940ceb9e7e9d5d014a00781c",
    "signer": "0xD6b69b153d028810DaE9d240FdFa714d984F1D2d",
    "userId": "398213410"
  }
}