use alloy_primitives::{address, bytes, eip191_hash_message};
use alloy_provider::{network::Ethereum, ReqwestProvider};

let address = address!("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
let message = "xxx";
let signature = bytes!("aaaa");
let provider = ReqwestProvider::<Ethereum>::new_http("https://rpc.example.com");

let verification = verify_signature(signature, address, message, provider).await.unwrap();
if verification.is_valid() {
    // signature valid
}