/**
  * Exports a SocialRecord object to a serialized JSONObject
  * 
  * @param SocialRecord The SocialRecord to export
  * @param KeyPair account key pair to export
  * @param KeyPair personal key pair to export
  * @return string The exported SocialRecord
  */
 public static function exportSocialRecord(SocialRecord $socialRecord, KeyPair $accountKeyPair = NULL, KeyPair $personalKeyPair = NULL)
 {
     $json = new JSONObject();
     $json->put('socialRecord', $socialRecord->getJSONObject());
     if ($accountKeyPair != NULL) {
         $json->put('accountPrivateKey', PrivateKey::exportKey($accountKeyPair->getPrivateKey()));
     }
     if ($personalKeyPair != NULL) {
         $json->put('personalPrivateKey', PrivateKey::exportKey($personalKeyPair->getPrivateKey()));
     }
     return $json->write();
 }