It is possible to restrict the tag selection to a list of root tags:
"pagecontent-card-tags-categories-filter": ["TAG_1", "TAG_2"], "pagecontent-card-tags-categories-filter-only-subcategories": true,
It would useful to be able to restrict the tag selection to a tag provider
"pagecontent-card-tags-categories-filter": ["provider_ID_OF_PROVIDER"], "pagecontent-card-tags-categories-filter-only-subcategories": true,