villain is unknowed

it probably looks stupid but this is an easy call on the river right?

its hard to say what kind of range he can x/r with in that spot. I feel like he can still have FD, TP that i beat and his raise is so small that i decided to call. When he bets small again on river im not sure if he betting with a very strong range or just bet blocking here. I think i still have to call cause im gettin 4.3 - 1 on a call.