Verifying signature from Relay sign endpoint

Is there an example showing how to verify the signature response returned by relayer.sign?
const signResponse = await relayer.sign({ message });

I'm trying to use @openzeppelin/contracts/utils/cryptography/ECDSA.sol to verify that the signature was signed by my Relay address in a solidity contract. I'm getting Error: invalid arrayify value when I pass the signature to ECDSA.recover()