I'd try some swirl mark remover and a clean used cotton rag (like a Tee shirt in ex cond but washed several times) on a spot first. Use some elbow grease. That will smooth it out. Then you have to rub it with a good carnuba wax, like Mothers. If that does not work, you need to lightly wet sand it first (try another spot with no wax residue) with some 1000 to 1500 to 2000 grit wet sandpaper (use a flat block) and then polish it and wax it. The sandpaper will dull it right down, but that is normal. Just do not go very far. Give it a hazing only. I then have a big bottle of Cargroom final polish swirl mark remover no silicon, and it works super. It's just the right amount of abrasive for hand buffing.
Buffing wheels are great, but you should have a good one and know what you are doing first. You need the right wheel and the right selection of abrasivies and know how to clean the wheel.
Maybe practice on a cheap guitar first? Checking with Mica what the finish actually is on the bass first might be wise, or do a search on this forum.
Good luck, Dave