Adding payment method

You can't directly add a new payment method through the API. Instead you can obtain a link that user can open and add their preferred payment method through our UI. To do this you need to:

1. Obtain the link by making a POST request to /api/v2/member/saved-payment-methods
2. Redirect user to the link
3. User adds the payment methods (or cancels)
4. User gets redirected back to the URL provided in step 1