1.3.0

You can include additional data in a payload. Put payloadDataCallback in your errorHandler config. For example:

'components' => [
   'errorHandler' => [
       'class' => 'baibaratsky\yii\rollbar\web\ErrorHandler',
       'payloadDataCallback' => function (\baibaratsky\yii\rollbar\web\ErrorHandler $errorHandler) {
           return [
               'exceptionCode' => $errorHandler->exception->getCode(),
               'rawRequestBody' => Yii::$app->request->getRawBody(),
           ];
       },
   ],
],