post https://secure.development.knotapi.com/card
This endpoint (which uses a secure subdomain) allows you to provide user and card information to initiate a card switch in a user's merchant account.
Call this endpoint after receiving the AUTHENTICATED webhook, which demonstrates the user has successfully authenticated to a merchant account and a card switch can now be performed. You'll have 15 seconds to send a request to this endpoint after receiving the AUTHENTICATED webhook.
You will receive a 200 status code if the card data is provided correctly to the endpoint. The CARD_UPDATED webhook represents that the card is subsequently updated in the merchant account.