Retrieving user id in a controller for handling external API?

I integrated a payment API into my system and user will be re-directed to the payment portal website with a randomly generated token on the URL for security. Upon successful payment and transaction, a callback function will be sent back with the data(transaction code,bill code,amount,etc) and I need to persist those data to my database.

PaymentController:

 public function createBill(Request $request){
       
        $credit = ($request->amount)*100;
        $option = array(
            'userSecretKey'=>config('payment.key'),
            'categoryCode'=>config('payment.category'),
            'billName'=>'FUIYOH HUB',
            'billDescription'=>'Top Up Credit',
            'billPriceSetting'=>1,
            'billPayorInfo'=>0,
            'billAmount'=>$credit,
            'billReturnUrl'=>route('payment-status'),
            'billCallbackUrl'=>route('payment-callback'),
            'billExternalReferenceNo' => '',
            'billTo'=>'',
            'billEmail'=>'',
            'billPhone'=>'',
            'billSplitPayment'=>0,
            'billSplitPaymentArgs'=>'',
            'billPaymentChannel'=>0,
            'billContentEmail'=>'Thank you for using our platform!',
            'billChargeToCustomer'=>2
          );  

    
          $url = 'https://dev.paymentxxx.com/index.php/api/createBill';
          
          $response = Http::asForm()->post($url,$option);
          
          $billCode = $response[0]['BillCode'];
         
          return redirect('https://dev.paymentxxx.com/'.$billCode);
    }

    public function paymentStatus(Request $request){

        //if success save payment record to db
            
          $response = $request->all();

          // check if transaction is successful
          if($request->status_id == 1){

            Log::info('Payment Status complete');
            Log::info($response);
  
            //return $response;
            return view('payments.success')
                    ->with('transaction_id',$request->transaction_id);
          }else{

            return view('payments.failed')
                   ->with('errorMessage',$request->msg);
          }
          
    }

 public function callback(Request $request){
        Log::info('callback function is called');
        $response = request()->all();
        Log::info($response);
        Log::info('This is user id:'.auth()->id());
        
        if($request->status == 1){

        //store transaction details
        $transaction = new Transaction();
        //Requires the user id here......currently returns null
        $transaction->user_id = auth()->id();
        $transaction->billcode = $request->billcode;
        $transaction->transaction_id = $request->refno;
        $transaction->amount = $request->amount;
        $transaction->save();

        //update new credit balance for user
        $user_credit = UserInfo::where('user_id',auth()->id());
        $user_credit->credit += $request->amount;
        $user_credit->save();

        }
    }

I tested and simulate the POST request to my side and it works but the only issue is I couldn't retrieve the user id using auth()->id() as it returns null. I am not sure if this happens in local environment but not in production environment since the callback will pass the data to my system only if my system is live. So I am not 100% sure if this actually returns auth()->id() if it's on production since the payment API server is able to talk to my system.

Is there a way to retrieve the user id in this scenario?