How do I make reusable content blocks for header and footer when using WordPress headless with another front-end?

I’m setting up a WordPress project with Gatsby as frontend, and also using ACF for content. But I wonder how you would setup global content parts like header, footer, or any other kind of content that is being used globally throughout the website? For example both HOME and ABOUT pages need to have their “own” content, but also shares some specific blocks with same content.

Getting user meta data from WP REST API

I am working on a project using the WordPress REST API and VueJS along with Axios (for the AJAX calls to GET/POST data back to the site). However, i need to be able to access a user’s meta data ie ‘collapsed_widgets’ from the REST API but the data I receive back from the GET response is