Schwinger proper time representation of log x

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Is any identity of the form $$ \log x = \int_0^\infty \frac{ds}s e^{-sx}$$ valid for some range of $x \in \mathbb C$?

Perhaps it will be true with $0$ replaced by some $\epsilon>0$, and up to finite terms, but I'm still interested to see whether one can prove it, perhaps with some manipulations involving Gamma function.

This question arises in quantum field theory.