Hello,
It seems like "searchTags" contains all of the information you want. Could you please take a look and check? Thanks.
A list of search tags that the webpage owner specified on the webpage. The API returns only indexed search tags.
The name field of the MetaTag object contains the indexed search tag. Search tags begin with search.* (for example, search.assetId). The content field contains the tag's value.
Regards,
Yutong