import type { SubmittableExtrinsic } from "@polkadot/api/types";
import type { ISubmittableResult } from "@polkadot/types/types";
import type { KeyringPair } from "@polkadot/keyring/types";
export declare const signAndSend: (tx: SubmittableExtrinsic<"promise", ISubmittableResult>, account?: KeyringPair, nonce?: number) => Promise<unknown>;