Export SVM Private Key

use dynamic_waas_sdk_svm::DynamicSvmWalletClient;

let svm = DynamicSvmWalletClient::new(&client);

let secret_seed_b58 = svm
    .export_private_key(&wallet_properties, &external_server_key_shares)
    .await?;

// base58-encoded 32-byte secret seed
println!("Secret seed: {secret_seed_b58}");

use solana_sdk::signature::Keypair;

let seed: [u8; 32] = bs58::decode(&secret_seed_b58)
    .into_vec()?
    .try_into()
    .unwrap();
let pubkey_bytes: [u8; 32] = bs58::decode(&wallet_properties.account_address)
    .into_vec()?
    .try_into()
    .unwrap();

let mut full = [0u8; 64];
full[..32].copy_from_slice(&seed);
full[32..].copy_from_slice(&pubkey_bytes);

let keypair = Keypair::from_bytes(&full)?;