initialize Express Checkout
POST {{baseUrl}}/v1/express-checkout
Request Body
{"subtotal"=>500, "currency"=>"USD", "success_callback_url"=>"https://mywebiste.com/sucess", "cancel_callback_url"=>"https://mywebiste.com/cancel"}
RESPONSES
status: OK
{"express_checkout_id":"d77d27a7-1b38-4276-9e37-5b460af920f6","express_url":"https://connect-dev.wafi.cash/express?express_id=d77d27a7-1b38-4276-9e37-5b460af920f6"}