Nginx rewrite sub page as main page (laravel)

I have a page on my site: http://example.com/sub-page

I want that page to be seen when I visit: http://example.com/

The site is a dynamic php page (laravel site) which requires the following config in nginx:

    location / {
            try_files $uri $uri/ /index.php$is_args$args;
    }

I tried using rewrite ^/$ /sub-page last; in the above location block but it doesn't work as intended.

How can I accomplish this?