{
  "manageEntity": {
    "action": "Update",
    "entityId": "508931608",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x543cc4eff274772a1bbf8c6f6d1d2c16331802b2b88df89cbfd7eacd1db0a713",
    "signature": "0xd8f1724585fdc1fb831dd3ef57d83eb82f7f0e7a93606a24c29b218c82dc655f3adec6fa38a7b5a553945edefb53c075be7b477b3bf8612d90d07e8faeab2d4f1b",
    "signer": "0x69163Aed5B32EC7f6C8a1e4aDEd7fD7E298F9521",
    "userId": "508931608"
  }
}