public function handle(Request $request, Closure $next): Response
{
    $response = $next($request);

    $json = $response->getData();
    $json['config'] = ...;

    $response->setData($json);

    return $response;
}

function removeDomain($url)
{
  $withoutProtocolDelimiter = str_replace('//', '', $url);
  return substr($withoutProtocolDelimiter, strpos($withoutProtocolDelimiter, '/') + 1);
}