The best solution is dependent upon your intent, in incorporating metadata to your site. What is it that you're hoping to get? What is the get in your case here? The different forms of metadata are for marginally diverse reasons. Google has created it very clear that It can be https://www.presta-addons-modules.com/en/opencart-seo-automatic-google-rich-snippets-json-ld-integration-opengraph-twitter-tags-schemaorg.html