import { TransactionKMS } from '../model';
/**
 * Sign Bnb pending transaction from Tatum KMS
 * @param tx pending transaction from KMS
 * @param fromPrivateKey private key to sign transaction with.
 * @param testnet mainnet or testnet version
 * @param provider url of the Bnb Server to connect to. If not set, default public server will be used.
 * @returns transaction data to be broadcast to blockchain.
 */
export declare const signBnbKMSTransaction: (tx: TransactionKMS, fromPrivateKey: string, testnet: boolean, provider?: string | undefined) => Promise<string>;