import { ContractType } from './ContractType';
import { Currency } from './Currency';
import { Fee } from './Fee';
import { PrivateKeyOrSignatureId } from './PrivateKeyOrSignatureId';
export declare class ApproveCustodialTransfer extends PrivateKeyOrSignatureId {
    custodialAddress: string;
    chain: Currency;
    contractType: ContractType;
    tokenAddress: string;
    spender: string;
    tokenId?: string;
    amount?: string;
    feeCurrency?: Currency;
    fee?: Fee;
    nonce?: number;
}