Downloading attachments via Jira rest api v2 with oAuth2 authentication

I’m working on a project that integrates with Jira right now, its pulling in tickets just fine via using an oAuth2 token, however I’m unable to download attachments via my API server since the attachments are served from I wanted to ask what the best way to achieve this would be, is there a method to authenticate and download attachments using an oAuth2 token