I would say they produce other indicates to recognize if the knowledge you give as a result of JSON-LD is pertinent for their internet search engine (like checking your web site is definitely speaking about what it promises to mention). When you are comfortable modifying your HTML, use structured facts https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-google-rich-snippets-json-ld-opengraph-twitter-tags-schemaorg.html