How to describe the Shema.org object with the meta tag so as not to show it to the user?

Question

Search Engine Optimization

I need inside itemscope itemtype="shema.org/BlogPosting" to describe the value of type "shema.org/Person" as itemprop="publisher". How can I do this inside the meta tags, since it is necessary that the user does not see this content (it is not provided by the page template, and Google reports a markup error if the publisher property of the post is not described)?