Rubbing alcohol might not be strong enough, but worth a shot since its gentle and cheap.
If that doesn't work or takes too much elbow grease, WD-40 will work. You won't need a lot of it and don't spray directly onto the surface. Just spray some on a microfiber towel and rub gently. I've found if you rub on and wait a few minutes before wiping clean, the adhesive gets soaked and comes off easier. (Got my experience removing those annoying dealership stickers from our cars.)
If you don't have WD-40 and need to buy something, any of the paint-safe bug/tar removers will do the trick. Use same as WD-40 above.
Whatever you use, don't forget to at least wash the car afterwards.