{
  "manageEntity": {
    "action": "Update",
    "entityId": "769201191",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd88d3e245a2a72874047721c0021403d6117f399d8d303828328fdb97beacfcc",
    "signature": "0x9894cf5af963a3679af06372050454febaed0af6f2b105b3f874617193235ba54982ed1b89faa6feb8c779d120564365caa101f12d77da8cf27ab174736712651c",
    "signer": "0xC5eB8967CF9Dd295F2887c7Bfac1B475C66C06f4",
    "userId": "769201191"
  }
}