wallet signature issue

[Humayounshah]

I am working on verifying wallet signatures in our backend. Signatures signed using Android Venom wallet are not getting verified with everscale-inpage-provider on backend. The same code base works when using Chrome extension for venom wallet. Any help. Is this a known issue with Venom wallet?

here's is my code for frontend:
const submitWallet = async () => {
console.log(new Address(address));
const providerState = await venomProvider?.getProviderState?.();
console.log(providerState?.permissions);
const publicKey = providerState?.permissions.accountInteraction?.publicKey;
console.log(publicKey);
try {
const base64 = btoa(
JSON.stringify({
walletAddress: address,
}),
);
const sign = await venomProvider.signDataRaw({ data: base64, publicKey });
dispatch(SubmitWallet({ publicKey, base64, signature: sign.signature }));
} catch (errr) {
console.log(errr);
}
};
and my backend code:
const { publicKey, base64, signature } = req.body;
const verificaiton = await ever.verifySignature({
publicKey,
dataHash: base64,
signature: signature,
});
if (!verificaiton.isValid) {
return res.status(403).json({
error: "Signature is not valid",
});
}