Laravoole\WebsocketCodec\JsonRpc::decode PHP Method

    public static function decode($data)
    {
        $data = @json_decode($data);
        if (!isset($data->method) || !isset($data->params)) {
            return;
        }
        return ['method' => $data->method, 'params' => $data->params, 'echo' => isset($data->id) ? $data->id : null];
    }