Checks if a user is authorized for card on file transactions with this card.
It is recommended to call this endpoint to confirm card on file transactions can be performed with a card before attempting any session (such as an auction) involving card on file transactions.
The external identifier of the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The API key of the merchant - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The external identifier of the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The blockchain associated with the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The API key of the merchant - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The API key of the merchant - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The web3 wallet of the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
The blockchain associated with the end user - see https://docs.coinflow.cash/api-reference/api-reference/authentication/get-session-key
