THE AIRPLANE WAS ON A NIGHT FLIGHT AND WAS MAKING A VFR APPROACH AND LANDING. THE PILOT HAD BEEN INFORMED THAT HE WAS FOLLOWING A B737. ON THE BASE LEG, THE B737 WAS TURNING OFF THE RUNWAY AND THE PILOT WAS WARNED OF POSSIBLE WAKE TURBULENCE AND WAS CLEARED TO LAND. AS THE AIRPLANE WAS OVER THE THRESHOLD, THE PILOT FELT A LITTLE TURBULENCE AND INCREASED HIS AIRSPEED. THE AIRPLANE ROLLED ALMOST 360 DEGREES. THE PILOT WAS ABLE TO GET THE AIRPLANE UPRIGHT BEFORE IMPACT. THE PILOT HAD A VISUAL SIGHTING ON THE B737 THROUGHOUT ALL OF THE APPROACH AND ATTEMPTED LANDING.