将Valu与Payfort集成给我签名不匹配

Question

func genrateOTPValu（getRandomMerchant：String，getName：String，getTotal：String，getProductType：String）{

       createSignatureForGenrateOTP =
       "sportEyeByAbouElgoukhaccess_code=hRRVGXrIpHSYoH19Ebwtamount=\(getTotal)currency=EGPlanguage=enmerchant_identifier=e54638ebmerchant_order_id=\(getRandomMerchant)merchant_reference=\(getRandomMerchant)payment_option=VALUphone_number=01008606003products=[{product_name=\(getName.replacingOccurrences(of: " ", with: "")), product_price=\(getTotal), product_category=\(getProductType)}]service_command=OTP_GENERATEsportEyeByAbouElgoukh"
       base64Str = createSignatureForGenrateOTP!.sha256()
       let params =
           [
               "merchant_reference":getRandomMerchant,
               "merchant_identifier":"e54638eb",
               "access_code":"hRRVGXrIpHSYoH19Ebwt",
               "signature": base64Str!,
               "service_command":"OTP_GENERATE",
               "language":"en",
               "payment_option":"VALU",
               "phone_number":"01008606003",
               "merchant_order_id":getRandomMerchant,
               "amount":getTotal,
               "currency":"EGP",
               "products":[
                   [
                       "product_name": getName,
                       "product_price": getTotal,
                       "product_category":getProductType,

                   ]

               ]
               ]  as [String : Any]



       Alamofire.request(URLAPi.URL_Payment_Api , method : .post , parameters : params  , encoding: JSONEncoding.default ).responseJSON { (response) in
           debugPrint(response)

           if response.result.isSuccess {

               //
               let jsonpayfortrequest : JSON  = JSON(response.result.value!)


               let passobjectforrootclasspayfort  = OTPGenrateModel(fromJson: jsonpayfortrequest)
               print(passobjectforrootclasspayfort.transaction_id!)


               if !passobjectforrootclasspayfort.transaction_id!.isEmpty {
                   self.verifyOTP(getTotal: getTotal, getRandom: getRandomMerchant, getTransaction: passobjectforrootclasspayfort.transaction_id!)
               }

               SVProgressHUD.dismiss()

           } else {
               print("error connection")
               SVProgressHUD.dismiss()
           }

       }
   }   

产品列表中的问题，因为必须这样显示产品列表才能成功创建签名[“ product：name”：值，“ product_price”：值，“ product_category”：值]