OOP classes for C# Console App that connects to Binance API, I require brainstorming help

I’d like to make a console app to handle buys and sells using this Binance API (spot, margin, and futures).

What do you think are minimal required classes I should make?

Thus far, I’ve THOUGHT (not written any) of…

Menu, User, Account, Order, Fill, Ticker… Wallet? Position? Anything else? I’d like to receive some help before advancing in the full design.

What else should I consider when building this little project?? My final goal is being able to make a ONE key stroke console interface for buying and selling (in time, I could include a one button interface in any other environment).