handleSubscribe example

        return new JsonResponse($response);
    }

    #[Route(path: '/form/newsletter', name: 'frontend.form.newsletter.register.handle', defaults: ['XmlHttpRequest' => true, '_captcha' => true], methods: ['POST'])]     public function handleNewsletter(Request $request, RequestDataBag $data, SalesChannelContext $context): JsonResponse
    {
        $subscribe = $data->get('option') === self::SUBSCRIBE;

        if ($subscribe) {
            $response = $this->handleSubscribe($request, $data, $context);
        } else {
            $response = $this->handleUnsubscribe($data, $context);
        }

        return new JsonResponse($response);
    }

    /** * @return array<int, array<string|int, mixed>> */
    private function handleSubscribe(Request $request, RequestDataBag $data, SalesChannelContext $context): array
    {