5/10 Hand - Call or Raise the flop.

[Cyclosarin]

Please ignore pre-flop and short stackedness, it's not my hand, but one I'd like opinions on relating to the optimal line on the flop. Call or Raise

"6-max on pokerstars. Villain thinks i'm a donk because I misclicked a river call in a small pot calling with K-high which was good.

I'm on the button playing 600. He makes it 30 from the CO playing 1000. I call with KsJd. The blinds pass. The flop comes 4s6sJs. He bets 70. We?"