Edit in JSFiddle

<script type="application/ld+json">
{ "@context" : "http://schema.org",
  "@type" : "Organization",
  "legalName" : "Nombre de la empresa",
  "url" : "http://nombreDeLaEmpresa.com/",
  "contactPoint" : [{
    "@type" : "ContactPoint",
    "telephone" : "+34-666-666-666",
    "contactType" : "customer service"
  }]
  "logo" : "http://NombredelaEmpresa.com/url-de-logopng",
  "sameAs" : [ "http://www.facebook.com/NombredelaEmpresa",
    "http://www.twitter.com/NombredelaEmpresa",
    "http://plus.google.com/+NombredelaEmpresa",
    "https://www.youtube.com/user/NombredelaEmpresaInc",
    "http://www.linkedin.com/company/Nombre-de-la-empresa"
  ]
}
</script>