Users
Add a user to a customer
client.express.users.add(stringexpressCustomerID, UserAddParams { userId } body, RequestOptionsoptions?): UserAddResponse { success, message }
POST/v1/express/{expressCustomerId}/users
Remove a user from a customer
client.express.users.remove(stringexpressCustomerID, UserRemoveParams { userId } body, RequestOptionsoptions?): UserRemoveResponse { success, message }
DELETE/v1/express/{expressCustomerId}/users