Defining Schema.org JSON-LD for my Multi-language Web application - schema.org

Question

I am building a web application for product comparison. The website has a structure like so:
http://example.com
http://example.com/fr/compare/
http://example.com/es/compare/
etc..
The main page is in English.
I want to insert Schema.org for each of the pages and I've construed this schema. Written in square brackets are what I intend to put as value later on.
<script type="application/ld+json">
{
"#context": "http://schema.org",
"#id": "[canonical-url-for-specific-language]#webapp",
"#type": "WebApplication",
"name": "[Product Comparison Title in specific language]",
"url": "[canonica url for specific language]",
"applicationCategory": "Utility",
"applicationSubCategory": "Product Comparison",
"about": "[page-description]",
"browserRequirements": "Requires JavaScript. Requires HTML5.",
"softwareVersion": "1.0.0",
"screenshot": "[image-url]",
"inLanguage": "[language-code]",
"softwareHelp": {
"#type": "CreativeWork",
"url": "[link-to-how-to-page-for-specific-language]"
},
"operatingSystem": "All"
}
</script>
How can I construct this JSON-LD well to work for my specific website.

Answer 1

If you use structured data for a home page that has a language selector, then the markup can be similar to the following:
{
"#context": "https://schema.org",
"#id": "[canonical-url-for-specific-language]#webapp",
"#type": "WebApplication",
"name": "[Product Comparison Title in specific language]",
"url": "[canonica url for specific language]",
"applicationCategory": "Utility",
"applicationSubCategory": "Product Comparison",
"about": "[page-description]",
"browserRequirements": "Requires JavaScript. Requires HTML5.",
"softwareVersion": "1.0.0",
"screenshot": "[image-url]",
"inLanguage":[{
"#type": "Language",
"name": "English",
"alternateName": "en",
"additionalType":"https://www.loc.gov/standards/iso639-2/php/code_list.php",
"sameAs":"https://en.wikipedia.org/wiki/English_language"
},
{
"#type": "Language",
"name": "Spanish",
"alternateName": "es",
"additionalType":"https://www.loc.gov/standards/iso639-2/php/code_list.php",
"sameAs":"https://en.wikipedia.org/wiki/Spanish_language"
}],
"softwareHelp": {
"#type": "CreativeWork",
"name":"Customer Service and Support",
"url": [
"https://examples.com/en/help.html",
"https://examples.com/es/help.html"
]
},
"operatingSystem": "All"
}
Note that I have here used for each language two identifiers with the properties sameAs and additionalType.
If the web page is with one particular language, then just delete the part of the markup for the unnecessary language and the square brackets.
Check out this markup on the Google testing tool and note that there are two warnings that are useful to fix.