diff --git a/src/Result/Result.php b/src/Result/Result.php
index a7cc8b9..b38a1c2 100644
--- a/src/Result/Result.php
+++ b/src/Result/Result.php
@@ -57,9 +57,14 @@ class Result
      *                        class constants.
      * @param array  $rawData Raw data returned by the LimeSurvey's API
      */
-    public function __construct($method, array $rawData)
+    public function __construct($method, $rawData)
     {
         $this->method = MethodType::getValidatedMethod($method);
+
+        if (true === is_string($rawData)) {
+            $rawData = base64_decode($rawData);
+            $rawData = json_decode($rawData, true);
+        }
         $this->setRawDataAndStatus($rawData);
     }
 
diff --git a/src/Service/SurveyService.php b/src/Service/SurveyService.php
index 29026e3..8281bcf 100644
--- a/src/Service/SurveyService.php
+++ b/src/Service/SurveyService.php
@@ -458,4 +458,31 @@ class SurveyService
 
         return false;
     }
+
+    public function getResponseIds($surveyId, $token)
+    {
+        $arguments = [
+            $surveyId,
+            $token,
+        ];
+
+        return $this
+            ->client
+            ->run('get_response_ids', $arguments)
+            ->getData(true);
+    }
+
+    public function exportResponsesByToken($surveyId, $token)
+    {
+        $arguments = [
+            $surveyId,
+            'json',
+            $token,
+        ];
+
+        return $this
+            ->client
+            ->run('export_responses_by_token', $arguments)
+            ->getData(true);
+    }
 }
diff --git a/src/Type/MethodType.php b/src/Type/MethodType.php
index 2296fc6..fefe9c5 100644
--- a/src/Type/MethodType.php
+++ b/src/Type/MethodType.php
@@ -93,6 +93,10 @@ class MethodType extends BaseType
      */
     const LIST_USERS = 'list_users';
 
+    const EXPORT_RESPONSES_BY_TOKEN = 'export_responses_by_token';
+
+    const GET_RESPONSE_IDS = 'get_response_ids';
+
     /**
      * Returns validated name of method to call or throws an exception (if method is incorrect)
      *