Structured Date (JSON-LD)

structured-data-json-ld-example.json

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://yoast.com/#organization",
      "name": "Yoast",
      "url": "https://yoast.com/",
      "sameAs": [
        "https://www.facebook.com/yoast",
        "https://www.instagram.com/yoast/",
        "https://www.linkedin.com/company/1414157/",
        "https://www.youtube.com/yoast",
        "https://www.pinterest.com/yoast/",
        "https://en.wikipedia.org/wiki/Yoast",
        "https://twitter.com/yoast"
      ],
      "logo": {
        "@type": "ImageObject",
        "@id": "https://yoast.com/#logo",
        "url": "https://yoast.com/app/uploads/2015/09/Yoast-Logo-Icon-120x120.png",
        "caption": "Yoast"
      },
      "image": {
        "@id": "https://yoast.com/#logo"
      }
    },
    {
      "@type": "WebSite",
      "@id": "https://yoast.com/#website",
      "url": "https://yoast.com/",
      "name": "Yoast",
      "publisher": {
        "@id": "https://yoast.com/#organization"
      },
      "potentialAction": {
        "@type": "SearchAction",
        "target": "https://yoast.com/?s={search_term_string}",
        "query-input": "required name=search_term_string"
      }
    },
    {
      "@type": "WebPage",
      "@id": "https://yoast.com/wordpress-seo/#webpage",
      "url": "https://yoast.com/wordpress-seo/",
      "inLanguage": "en-US",
      "name": "WordPress SEO Tutorial \u2022 The Definitive Guide \u2022 Yoast",
      "isPartOf":  {
        "@id": "https://yoast.com/#website"
      },
      "image":  {
        "@type": "ImageObject",
        "@id": "https://yoast.com/wordpress-seo/#primaryimage",
        "url": "https://yoast.com/app/uploads/2008/04/WordPress_SEO_definitive_guide_FI.png",
        "caption": ""
      },
      "primaryImageOfPage":  {
        "@id": "https://yoast.com/wordpress-seo/#primaryimage"
      },
      "datePublished": "2019-03-28T14: 05: 01+00: 00",
      "dateModified": "2019-04-11T12: 24: 14+00: 00",
      "description": "This is the ONLY tutorial you'll need to hugely increase your search engine traffic by improving your WordPress SEO. Want higher rankings? Read on!",
      "breadcrumb": {
        "@id": "https://yoast.com/wordpress-seo/#breadcrumb"
      }
    },
    {
      "@type": "BreadcrumbList",
      "@id": "https://yoast.com/wordpress-seo/#breadcrumb",
      "itemListElement": [{
        "@type": "ListItem",
        "position": 1,
        "item": {
          "@type": "WebPage",
          "@id": "https://yoast.com/",
          "url": "https://yoast.com/",
          "name": "Home"
        }
      },
      {
        "@type": "ListItem",
        "position": 2,
        "item": {
          "@type": "WebPage",
          "@id": "https://yoast.com/seo-blog/",
          "url": "https://yoast.com/seo-blog/",
          "name": "SEO blog"
        }
      },
      {
        "@type": "ListItem",
        "position": 3,
        "item": {
          "@type": "WebPage",
          "@id": "https://yoast.com/tag/wordpress/",
          "url": "https://yoast.com/tag/wordpress/",
          "name": "WordPress"
        }
      },
      {
        "@type": "ListItem",
        "position": 4,
        "item": {
          "@type": "WebPage",
        "@id": "https://yoast.com/wordpress-seo/",
        "url": "https://yoast.com/wordpress-seo/",
        "name": "WordPress SEO:  the definitive guide"
      }
      }]
    },
    {
      "@type": "Article",
      "@id": "https://yoast.com/wordpress-seo/#article",
      "isPartOf": {
        "@id": "https://yoast.com/wordpress-seo/#webpage"
      },
      "author": {
        "@id": "https://yoast.com/about-us/team/joost-de-valk/#author",
        "name": "Joost de Valk"
      },
      "publisher": {
        "@id": "https://yoast.com/#organization"
      },
      "headline": "WordPress SEO:  the definitive guide",
      "datePublished": "2019-03-28T14: 05: 01+00: 00",
      "dateModified": "2019-04-11T12: 24: 14+00: 00",
      "commentCount": "4",
      "mainEntityOfPage": "https://yoast.com/wordpress-seo/#webpage",
      "image": {
        "@id": "https://yoast.com/wordpress-seo/#primaryimage"
      },
      "keywords": "Content SEO, Google Analytics, Mobile SEO, Security, Site Speed, Site Structure, Technical SEO, WordPress, Yoast SEO"
    },
    {
      "@type": "Person",
      "@id": "https://yoast.com/about-us/team/joost-de-valk/#author",
      "name": "Joost de Valk",
      "image": {
        "@type": "ImageObject",
        "@id": "https://yoast.com/#personlogo", "url": "https://yoast.com/app/uploads/2018/09/avatar_user_1_1537774226.png",
        "caption": "Joost de Valk"
      },
      "description": "Joost de Valk is the founder and Chief Product Officer of Yoast and the Lead Marketing & Communication for WordPress.org. He's a digital marketer, developer and an Open Source fanatic.",
      "sameAs": [
        "https://www.facebook.com/jdevalk",
        "http: //www.linkedin.com/in/jdevalk",
        "https://twitter.com/jdevalk"
      ]
    }
  ]
}
</script>

https://moz.com/blog/writing-structured-data-guide