Good time for a river minraise?

[Bigfoot]

Playing 400NL and villain seems unremarkable (~500, I cover), haven't faced off with him in any pots.

Preflop: UTG calls, UTG+1 calls, MP (villain) calls, I call on the button with 75s, SB calls, BB calls.

Flop: Jx/2s/4s
It's checked to MP who bets 8. I call and everyone else folds.

Turn: 8s/Jx/2s/4s
MP bets 20. I called. I wasn't sure what he had at this point and I figured a raise might let a weak jack (j9, j10, etc.) off the hook.

River: Jx/8s/Jx/2s/4s
He leads for 32 and I minraise to 64...

I rarely minraise rivers, but this seemed like one of those times when it was a good play. My thinking was that no jack would be folding to that raise and a pocket pair (9s, 10s, etc.) might look me up as well putting me on a bluff. I also was thinking that a re-raise/push would be an easy fold.

Anyway I'm just curious what line is best here on the river? Raise bigger? just call?