The Nuggets have a ~96.5% chance of winning the series.
A bettor has three options here.
1. Cash Out: Pays $43,565
2. Let It Ride: Pays $46,350 to win, $0 with loss. EV = $44,727.
3. Hedge with a +2400 Heat futures bet:
DEN win: $43,350, MIA win: $72,000. EV = $47,247