Can you use a UTF-8 string as the Arguments for a StartInfo?

I am trying to pass a UTF-8 (in this case a Japanese string) to an application as a console argument.

Something like this (this is just an example! (cmd.exe would be a custom app))

var process = new System.Diagnostics.Process();
process.StartInfo.Arguments = "/K \"echo ????????\"";
process.StartInfo.FileName = "cmd.exe";
process.StartInfo.UseShellExecute = true;

process.Start();
process.WaitForExit();

Executing this seems to loose the UTF-8 string and all the target application sees is "echo ?????????"

When executing this command directly on the command line (by pasting the arguments) the target application receives the string correctly even though the command line itself doesn't seem to display it correctly.

Do I need to do anything special to enable UTF-8 support in the arguments or is this just not supported?