import type { KeyringPair } from '@subwallet/keyring/types';
import type { SignerPayloadJSON } from '@polkadot/types/types';
import type { HexString } from '@polkadot/util/types';
import type { RequestSign } from './types';
import { TypeRegistry } from '@polkadot/types';
export default class RequestExtrinsicSign implements RequestSign {
    readonly payload: SignerPayloadJSON;
    constructor(payload: SignerPayloadJSON);
    sign(registry: TypeRegistry, pair: KeyringPair): {
        signature: HexString;
    };
}