Backup Office 365 SharePoint site for move to local hosting

I have a Office 365 SharePoint site that I need to backup in its entirety. All the information I can find on this is at least a couple of years old.

With a local SharePoint site this is easy to accomplish from Central Administration but I can find no built in way to do the same other than save the site as a template but this runs into the 50MB max size limitation.