export declare class MockDataService {
    private subscriptions;
    private transactions;
    private otpChallenges;
    private userBalances;
    constructor();
    private initializeMockData;
    generateISE2(msisdn: string, country: string): string;
    createSubscription(data: any): any;
    getSubscription(id: string): any;
    deleteSubscription(id: string): boolean;
    createTransaction(data: any): any;
    createOtpChallenge(msisdn: string, country: string): any;
    validateOtp(challengeId: string, inputOtp: string): any;
    getUserBalance(ise2: string): any;
}