We've been working on one requirement. In which we need to get the changes for the Issue Attachments using the REST API.
We don't want to download the Issue Attachments every time fully. We only need to detect the changes which occurred after the previous API access
API doc, https://developer.atlassian.com/cloud/jira/platform/rest/v2/api-group-issue-attachments/#api-group-issue-attachments
