stripe-react-serverless-32.ts

class StripeManager {
  ...

  public static async handleSubscription(subscriptionID: string, end: boolean) {

    const request = await fetch('https://your-endpoint/stripe/handle-subscription', {
      method: 'POST',
      body: JSON.stringify({
        subscriptionID,
        end,
      }),
    });

    return await request.json() as IStripeSubscription;
  }

  ...
}