private function tranform_event_to_row(Event $event)
 {
     return [$this->uuid_to_binary($event->event_id()), $this->uuid_to_binary($event->command_id()), $this->uuid_to_binary($event->aggregate_id()), $this->uuid_to_binary($event->schema()->event_id()), $this->uuid_to_binary($event->schema()->aggregate_id()), $event->occured_at(), json_encode($event->payload())];
 }