我正在使用stripe API和.net创建订阅。
我的问题是，当我创建一个订阅 meta数据是保存在订阅而不是被保存在付款.有没有办法保存元数据在这第一订阅付款代替？
这就是我迄今所作的努力：

var subscriptionOptions = new SubscriptionCreateOptions
        {
            Customer = customerID,
            Items = new List<SubscriptionItemOptions>
            {
                new SubscriptionItemOptions
                {
                    Price = priceID,
                    Quantity = 1
                },
            },
            PaymentBehavior = "default_incomplete",
            Metadata = new Dictionary<string, string>
                {
                    { "id", "123"},
                    { "name", "david" },
                },
        };
        subscriptionOptions.AddExpand("latest_invoice.payment_intent");
        var subscriptionService = new SubscriptionService();
        try
        {
            Subscription subscription = await subscriptionService.CreateAsync(subscriptionOptions);

            return new SubscriptionCreateResponse
            {
                SubscriptionId = subscription.Id,
                ClientSecret = subscription.LatestInvoice.PaymentIntent.ClientSecret,
            };
        }