The Content-Range header supports a (dgrid) OnDemandGrid

use FOS\RestBundle\View\View as FOSRestView;
...
$view = FOSRestView::create();
$view->setData($data);
$view->setHeader( 'Content-Range', 'items '.$offset.'-'.($offset+$limit).'/'.$count);
$handler = $this->get('fos_rest.view_handler');
return $handler->handle($view);

Ref: https://symfony.com/doc/1.5/bundles/FOSRestBundle/2-the-view-layer.html

Symfony 4