import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class Main {
	public static void main(String[] args) throws ParseException {
		String dateInString = "{ts '2021-03-24 12:52:38.933'}";
		SimpleDateFormat parser = new SimpleDateFormat("'{ts '''yyyy-MM-dd HH:mm:ss.SSS'''}'", Locale.ENGLISH);
		Date date = parser.parse(dateInString);
		System.out.println(date);

		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS");
		System.out.println(formatter.format(date));
	}
}