KMnO4 + H2SO4 +NaSO3 --?

KMnO4 + H2SO4 +NaSO3 -->?sodium sulfite and acidified potassium permanganate produces a brown, partly dissolved solid, found in a solution which changes colour from purple (the potassium permangante) to yellow. What are the products? Can it please be in a chemical equation, as I would like to make it into a net ionic equation myself (sodium and potassium are spectator ions?).