How can use private url in draw.io?

Question

I'm making a system that integrates with the draw.io, and I need to export the url generated to my system, but when I do this, anyone who has access to this url can do edits in my diagram. my question is: how do I leave this url private, being accessed only by the user who created it? it would be like putting a token for each system user in that url, so only who has logged it on will access and edit it