<script type="application/ld+json">
{
"@context": "http://schema.org",
"@type": "WebSite",
"url": "https://www.xxx.org/",
"potentialAction": {
"@type": "SearchAction",
"target": "https://www.xxx.org/search/?q={search_term_string}",
"query-input": "required name=search_term_string"
}
}
</script>