diff --git a/src/Doctrine/ODM/OrientDB/Manager.php b/src/Doctrine/ODM/OrientDB/Manager.php
index 9da0dee..558928d 100644
--- a/src/Doctrine/ODM/OrientDB/Manager.php
+++ b/src/Doctrine/ODM/OrientDB/Manager.php
@@ -167,7 +167,7 @@ public function findRecords(Array $rids, $fetchPlan = null, $lazy = true)
      */
     public function flush()
     {
-        throw new \Exception;
+        return;
     }
 
     /**
@@ -238,7 +238,16 @@ public function merge($object)
      */
     public function persist($object)
     {
-        throw new \Exception();
+        $json = $this->toJson($object);
+        if($this->checkExists($object) === false){
+            $response = $this->getBinding()->postDocument($json);
+            $rid = $response->getData();
+            $object->setRid($rid);    
+        } else {
+            $response = $this->getBinding()->putDocument($object->getRid(), $json);
+            $result = $response->getData();
+        }
+        return $object;
     }
 
     /**
@@ -248,7 +257,13 @@ public function persist($object)
      */
     public function remove($object)
     {
-        throw new \Exception();
+        if($this->checkExists($object) === false){
+            return false;
+        }
+        $response = $this->getBinding()->deleteDocument($object->getRid());
+        $result = $response->getData();
+        $object->setRid(null);
+        return $result;
     }
 
     /**
@@ -366,4 +381,39 @@ protected function getBinding()
     {
         return $this->binding;
     }
+
+    protected function toJson($object)
+    {
+        $data = (array) $object;
+        foreach ($data as $key => $value) {
+            $newKey = preg_replace('/[^a-z]/i', null, $key);
+            $data[$newKey] = $value;
+            unset($data[$key]);
+            if ( $value instanceof \Doctrine\ODM\OrientDB\Proxy\Value ) {
+                $object = $value->__invoke();
+                $data[$newKey] = $object->getRid(); 
+            }elseif ( $value instanceof \DateTime ) {
+                $data[$newKey] = $value->format('Y-m-d H:i:s');
+            }
+        }
+        $data['@class'] = join('', array_slice(explode('\\', get_class($object)), -1));
+        if(array_key_exists('rid', $data)){
+            unset($data['rid']);
+        }
+        if(array_key_exists('version', $data)){
+            $data['@version'] = $data['version'];
+            unset($data['version']);
+        }
+        return json_encode($data);
+    }
+
+    protected function checkExists($object)
+    {
+        $rid = $object->getRid();
+        if(empty($rid)){
+            return false;
+        }
+        return true;
+    }
+
 }
diff --git a/src/Doctrine/OrientDB/Binding/Adapter/CurlClientAdapterResult.php b/src/Doctrine/OrientDB/Binding/Adapter/CurlClientAdapterResult.php
index f80d33c..6aa1d40 100644
--- a/src/Doctrine/OrientDB/Binding/Adapter/CurlClientAdapterResult.php
+++ b/src/Doctrine/OrientDB/Binding/Adapter/CurlClientAdapterResult.php
@@ -43,8 +43,14 @@ public function getData()
         if (!$this->isValid()) {
             throw new InvalidQueryException($this->response->getBody(), $this);
         }
+        $body = $this->response->getBody();
 
-        if (false === $json = json_decode($this->response->getBody())) {
+        if (null === $json = json_decode($body)) {
+            if ($this->isValidRid($body)) {
+                return $body;
+            } elseif ($body === "") {
+                return true;
+            }
             throw new \RuntimeException("Invalid JSON payload");
         }
 
@@ -77,4 +83,12 @@ public function getInnerResponse()
     {
         return $this->response;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function isValidRid($body)
+    {
+        return preg_match('/#\d+:\d+/', $body);
+    }
 }
diff --git a/src/Doctrine/OrientDB/Binding/Client/Http/CurlClientResponse.php b/src/Doctrine/OrientDB/Binding/Client/Http/CurlClientResponse.php
index c9b568d..f34d2ed 100644
--- a/src/Doctrine/OrientDB/Binding/Client/Http/CurlClientResponse.php
+++ b/src/Doctrine/OrientDB/Binding/Client/Http/CurlClientResponse.php
@@ -118,6 +118,7 @@ public function getValidStatusCodes()
             self::STATUS_NO_CONTENT,
             self::STATUS_RESET_CONTENT,
             self::STATUS_PARTIAL_CONTENT,
+            self::STATUS_CREATED
         );
     }