Is it possible to store user data in state?

Question

React

Please tell me, for example, the user is logged in, the client receives user data in response from the server, for example, username, isLoggedIn, etc., except for the password, of course. Whether it is possible to write down this data in state that in the subsequent to use this data somewhere already on the client? How is it in terms of security? And is it normal in general? If not, what are the options?