It is a list of dicts of metadata, one for each link. In each dict, these keys are recognised:
title: str: short title for the linkurl: str: external URLabstract: str: long description or abstract for the linkarchive: str: URL to an archived version of the sitetags: List[str]: tags for this linkrelated: List[Dict[str, str]]: other related links, as a list of dicts withtitleandurlkeys