Fold to 3bet is kind of important here.
I fold with given info though. We don't need to be good too often, but a river raise after the cbet/check/bet line is rarely a bluff and rarely a lesser value bet.
If he had a draw, he'd have bet the turn. If he has Jx/QQ/TT, he never raises river. If he has a 7, he doesn't always ch back the turn, but the likelihood of him checking back the turn is still higher than him checking back a draw for ex. really we're hoping for Kxs to value shove really light or a random spazz shove from his marginal made hands, which imo doesn't happen nearly often enough to call.