The value of the “recalls” property leads to the actual bookmarked page:
But be aware, that this data browser is kind of a developer tool to browse the raw data.
Usually as an end user you would use an app like markbook.org or poddit to view and use your bookmarks.
The cool thing is, since the bookmarks are stored in your Pod, you can seamlessly switch between those apps, and both are totally aware of your bookmarks at any given time you use them