{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9c5ffc1ddb7543c443232c5c07d97ea26786844646fea20ed9616b59f67a9cdb",
    "signature": "0x0e41990b9e55ae0147535851c85e8add4eda842a11c70e18dd0b8348edaac2cd3ca8f130b3a5ff4047da6c7cd62078a0b1f4743a8fdf28065ed4fefc5e409d181c",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}