Sign a message

import {useEmbeddedEthereumWallet} from '@privy-io/expo';

const {wallets} = useEmbeddedEthereumWallet();
const wallet = wallets[0];

// Get an EIP-1193 Provider
const provider = await wallet.getProvider();
// Get address
const accounts = await provider.request({
  method: 'eth_requestAccounts'
});

// Sign message
const message = 'I hereby vote for foobar';
const signature = await provider.request({
  method: 'personal_sign',
  params: [message, accounts[0]]
});

guard let user = privy.user else {
    // If user is null, user is not authenticated
    return
}

// Retrieve list of user's embedded Ethereum wallets
let ethereumWallets = user.embeddedEthereumWallets

// Grab the desired wallet. Here, we retrieve the first wallet
guard let wallet = ethereumWallets.first else {
    // No ETH wallets
    return
}

let signature = try await wallet.provider.request(.personalSign(message: "A message to sign", address: wallet.add))

print("Result signature: \(signature)")

// Get Privy user
val user = privy.user

// check if user is authenticated
if (user != null) {
  // Retrieve list of user's embedded Ethereum wallets
  val ethereumWallets = user.embeddedEthereumWallets

  if (ethereumWallets.isNotEmpty()) {
    // Grab the desired wallet. Here, we retrieve the first wallet
    val ethereumWallet = ethereumWallets.first()

    // Make an rpc request
    ethereumWallet.provider.request(
      request = EthereumRpcRequest.personalSign("A message to sign", ethereumWallet.address),
    )
  }
}

try {
    IEmbeddedEthereumWallet embeddedWallet = PrivyManager.Instance.User.EmbeddedWallets[0];
    var rpcRequest = new RpcRequest
    {m
        Method = "personal_sign",
        Params = new string[] { "A message to sign", embeddedWallet.Address }  // Use the 'new' keyword here
    };
    RpcResponse personalSignResponse = await embeddedWallet.RpcProvider.Request(rpcRequest);
    Debug.Log(personalSignResponse.Data);
} catch (PrivyException.EmbeddedWalletException ex){
    Debug.LogError($"Could not sign message due to error: {ex.Error} {ex.Message}");
} catch (Exception ex) {
    Debug.LogError($"Could not sign message exception {ex.Message}");
}

// Get an EIP-1193 Provider
final ethereumWallet = privy.user.embeddedEthereumWallets.first;
final provider = ethereumWallet.provider;

// Sign message
final message = 'A message to you Rudy';
final request = EthereumRpcRequest(
  method: 'personal_sign',
  params: [message, ethereumWallet.address],
);

final result = await provider.request(request);

result.fold(
  onSuccess: (response) {
    final signature = response.data;
    print('Signature: $signature');
  },
  onFailure: (error) {
    print('Error signing message: ${error.message}');
  },
);

const {signature, encoding} = await privy.wallets().ethereum().signMessage('insert-wallet-id', {
  message: 'Hello world'
});

signMessage: async ({walletId: string, message: string, idempotencyKey?: string}) => Promise<{signature: string, encoding: 'hex'}>

const {signature, encoding} = await privy.walletApi.ethereum.signMessage({
  walletId: 'insert-wallet-id',
  message: 'Hello world'
});

try {
    String message = "Hello, Ethereum.";

    // Example: If wallet's owner is an authorization private key
    AuthorizationContext authorizationContext = AuthorizationContext.builder()
        .addAuthorizationPrivateKey("authorization-key")
        .build();

    EthereumPersonalSignRpcResponseData response = privyClient
        .wallets()
        .ethereum()
        .signMessage(
            walletId,
            message.getBytes(StandardCharsets.UTF_8),
            authorizationContext
        );

    String signature = response.signature();
} catch (APIException e) {
    String errorBody = e.bodyAsString();
    System.err.println(errorBody);
} catch (Exception e) {
    System.err.println(e.getMessage());
}

use privy_rs::{AuthorizationContext, PrivyClient};

let client = PrivyClient::new("app_id".to_string(), "app_secret".to_string())?;
let ethereum_service = client.wallets().ethereum();
let auth_ctx = AuthorizationContext::new();

let signature = ethereum_service
    .sign_message(
        &wallet_id,
        "Hello, Ethereum!",
        &auth_ctx,
        Some("unique-request-id-123"),
    )
    .await?;

println!("Message signed successfully");

https://api.privy.io/v1/wallets/<wallet_id>/rpc

$ curl --request POST https://api.privy.io/v1/wallets/<wallet_id>/rpc \
-u "<your-privy-app-id>:<your-privy-app-secret>" \
-H "privy-app-id: <your-privy-app-id>" \
-H "privy-authorization-signature: <authorization-signature-for-request>" \
-H 'Content-Type: application/json' \
-d '{
  "chain_type": "ethereum",
  "method": "personal_sign",
  "params": {
    "message": "Hello, Ethereum.",
    "encoding": "utf-8"
  }
}'