Set cookie via GrapeApi Ruby on Rails

I have to set secure & http_only cookie from BE for master domain - website.com where those cookies will be also used by subdomains - sub1.website.com, sub2.website.com etc ...

I've tried with cookies, headers['Set-Cookie] but nothing works as expected. Is there any other way to do it via GrapeAPI ?

Any help would be appreciate.

Thanks