Magento 2 add request header to Graphql programmatically

Question

I'm trying to run this Graphql url https://****.***.com/in/graphql by Postman

I saw in Magento document that the URL above can contain Store header https://devdocs.magento.com/guides/v2.4/graphql/send-request.html

But when I check the header it does not contain Store attribute. And I have to add it manually.

How can I add Store attribute to the Header request programmatically or change the URL to get the store_code automatically?

Note*: all ticked fields are automatically added by default.