I can't understand why he would donk bet this? I thought JJ...

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($330.90)
MP ($381.95)
CO ($51.40)
Hero ($183.20)
SB ($100.50)
BB ($100)

Preflop: Hero is Button with A, A.
1 fold, MP raises to $3.5, 1 fold, Hero raises to $13, 2 folds, MP calls $9.50.

Flop: ($27.50) A, J, 7 (2 players)
MP bets $19, Hero raises to $170.2, MP folds.

Final Pot: $216.70

Was this a bad push or should I have just raised to $60ish?