public function postDJKSertifikasi(Request $req){

        $ch = curl_init();
        $consumerId = "";
        $secretKey = "";
        date_default_timezone_set('UTC');
        $tStamp = strval(time()-strtotime('1970-01-01 00:00:00'));
        $signature = hash_hmac('sha256', $consumerId."&".$tStamp, $secretKey, true);

        // Base64 Encode
        $encodedSignature = base64_encode($signature);

        $postUrl = 'http://103.87.161.97/slo/api/tm/permohonan/create';

        $data = [
            "tanggal" => $req->$tanggal,
            "pemilik" => [
                "nama" => $req->$namapemilik,
                "alamat" => $req->$alamatpemilik,
                "kota_id" => $req->$kotaidpemilik
            ],
            "instalasi" => [
                "nama" => $req->namainstalasi,
                "lokasi"=> $req->lokasiinstalasi,
                "kota_id"=> $req->kotaidinstalasi,
                "jenis"=> $req->jenis,
                "kapasitas"=> $kapasitas,
                "panjang_saluran"=> $panjangsaluran,

            ]
            ];
        $postDataJson = json_encode($data);


        try{
            curl_setopt($ch, CURLOPT_URL, $postUrl);
            $headers[] = 'Accept: application/json';
            $headers[] = 'Content-Type: application/json';
            $headers[] = 'X-cons-id: '.$consumerId.' ';
            $headers[] = 'X-timestamp: '.$tStamp.' ';
            $headers[] = 'X-signature: '.$encodedSignature;
            curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $postDataJson);

            $response = curl_exec($ch);
            curl_close($ch);
            $responseBody = json_encode($response, true);



        }catch(\Exception $e){
            $responseBody = $e->getMessage();
        }

        return response()->json($responseBody);

    }