Signatures return null 'INAPP_PURCHASE_DATA' using 'In-app Billing V3'

Question

I am implementing the purchase of Subscriptions in an Android application.

So far, payment orders are already configured in the 'Google Play Developer Console' and I can debit the amount set in each of the SKU on the credit card.

At the end of this, I want to get the JSON data that should come "INAPP_PURCHASE_DATA" within the onActivityResult of the application.

However, when making the call on bundle, returns nothing.

All places of the code where the purchase data should return always return a Null value.

But even so the purchase is charged from my card. Which brings me to the process of running to the console of 'Google Wallet' and cancel the billing.

Here’s what I’m doing at the moment:

I set the service before Oncreate.

ServiceConnection mServiceConn = new ServiceConnection() {

        @Override
        public void onServiceDisconnected(ComponentName name) {
            mService = null;
        }
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            mService = IInAppBillingService.Stub.asInterface(service);
        }
    };

In onCreate I define the SKU that comes from another Activity, I start the Service and configuration of Iabhelper.

@Override
    public void onCreate(Bundle savedInstanceState) {
        .
        .
        .
        skuSubs = getIntent().getExtras().getString("SKU_TYPE");

        bindService(new Intent("com.android.vending.billing.InAppBillingService.BIND"), mServiceConn, Context.BIND_AUTO_CREATE);

        mHelper = new IabHelper(this, base64EncodedPublicKey);
        mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
              public void onIabSetupFinished(IabResult result) {
                if (!result.isSuccess()) {
                    Log.d(TAG, "In-app Billing setup failed: " result);
                }else{             
                    Log.d(TAG, "In-app Billing is set up OK");
                }
              }
            });
    }

here I define the method that will be used in onClick of my Activity to open the signature dialog. (developerPayload is generated elsewhere in the code)

public void buyClick(View view) {
        mHelper.launchPurchaseFlow(this, skuSubs, 10001, mPurchaseFinishedListener, developerPayload);
    }

In the 'onActivityResult' method I capture the return of the 'INAPP_PURCHASE_DATA' by 'Bundle'.

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {     
            super.onActivityResult(requestCode, resultCode, data);
          }
          if(data.getExtras()!=null){
              Bundle bundle = data.getExtras();
              editText.setText(bundle.getString("INAPP_PURCHASE_DATA"));
          }else{
              editText.setText("null");
          }
    }

Here the 'mPurchaseFinishedListener' treats the purchase data. In tests I tried to capture the data by the 'Purchase' class, but without success.

IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
    public void onIabPurchaseFinished(IabResult result, Purchase purchase) {

        if (result.isFailure()) {
            return;
        }else 
            if (purchase.getSku().equals(skuSubs)) {
                mHelper.queryInventoryAsync(mReceivedInventoryListener);
            }
        }
    };

IabHelper.QueryInventoryFinishedListener mReceivedInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
       public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
           StringBuffer sb = new StringBuffer();
           if (result.isFailure()) {
                // Handle failure
                return;
            } else {
              mHelper.consumeAsync(inventory.getPurchase(skuSubs), mConsumeFinishedListener);
          }
       }
};

IabHelper.OnConsumeFinishedListener mConsumeFinishedListener = new IabHelper.OnConsumeFinishedListener() {
            public void onConsumeFinished(Purchase purchase, IabResult result) {
                if (result.isSuccess()) {
                    //ok msg
                 } else {
                     //fail msg
                 }
            }
        };

In onDestroy I end with 'Service' and 'Iabhelper''.

@Override
public void onDestroy() {
    super.onDestroy();
    if (mService != null) unbindService(mServiceConn);
    if (mHelper != null) {
        mHelper.dispose();
        mHelper = null;
    }       
}

In my 'Androidmanifest.xml' are defined:

   <uses-permission android:name="com.android.vending.BILLING" />
   ...
    <service android:name="com.android.vending.billing.IInAppBillingService" />

When I set this up, depending on the SKU that is sent in the previous Activity I get the purchase data correctly.

When I make the purchase, it is determined as completed and then I do not receive the purchase result.

I open the Developer Console and immediately after I log into Wallet to cancel the debited Subscription.

How do I make this request within the application? I can’t get the return on purchase so far.