UPDATE:
I called the dealership, and for my 2017 Nissan Leaf SV, the residual is $13,699.25.
From what I understand, NMAC owns the car with me since it's a lease. At the end of my lease I would have made 24 payment of $249, so $5,976, plus the $13,699 residual = $19,675 total for the car...