public void CreateSubscriptionFunction()
    {
        string JSONBody = @"{""accounts"": {""transactionHistory"": true,""balance"": true, ""details"": true, ""checkFundsAvailability"": true}, ""payments"": {""limit"": 99999999, ""currency"": ""EUR"", ""amount"":12345678}}";
        string createsubscriptiontext = helperClass.CreateSubscription(JSONBody);

        Debug.Log(helperClass.CreateSubscription(JSONBody));
        ResponseText.text = createsubscriptiontext;
    }