public function __construct($data = [])
{
$this->text = isset($data['text']) ? $data['text'] : null;
$this->channel = isset($data['channel']) ? $data['channel'] : null;
$this->user = isset($data['user']) ? $data['user'] : null;
$this->subType = isset($data['subtype']) ? $data['subtype'] : null;
}