not made a reece on massive before but suppsose the principal is the same.
set 1 osc to -12 and osc 2 to about -10
play a long note and its a very basic reece type bass.
to get wobble on it youd have to set the sync speed on an lfo and drag and drop it in the cut off nob of the filter (notch filter usualy is the best imo)
obviously thats very basic, you will need to add multiple fx (chorus, distortion) to the reece to get it sounding like a mean muthafuka.
edit. its actually easier to do on the 3xosc in fruity.