As a JSM administrator, you can monitor every edit from the issues in Jira. All updates are listed under an issue as comments.
→ Notification in notification Jira center from Modify My Request.
→ Comment from Modify My Request in the Comment section of:
witch field has been modified
who modified it
when has been modified → date and hour.
The section the options to be Edit and Delete.
→ Comment from Modify My Request in the History section of:
what was the exact change