import { BigNumber } from "@ethersproject/bignumber";
import { ethers } from "ethers";
export declare const MaxUint256: BigNumber;
export declare function encodeItemId(itemId: string): BigNumber;
export declare function decodeItemId(itemId: string): string;
export declare enum SignedDataOperationType {
    DEPOSIT = 0,
    WITHDRAW = 1
}
export declare function getSignedData(owner: ethers.Wallet, messageSender: string, userNonce: number, encodedItemId: number, tokenAddress: string, amount: BigNumber | number, operationType: SignedDataOperationType): Promise<{
    v: number;
    r: string;
    s: string;
}>;