How to get expiry date for Subscription with client side in Android?

Question

We are implementing the subscription using in-app purchase in android, We are getting the purchase timestamp like the below format

\'{
   \"orderId\":\"GPA.1234         


        

Answer 1

I tried with this API "https://www.googleapis.com/androidpublisher/v2/applications/" + AppController.getInstance().getPackageName() + "/purchases/subscriptions/" + mSubscriptionId + "/" + "tokens/" + mPurchaseToken;

with proper valid data but I found this error :

**{
    "error": {
        "errors": [
            {
                "domain": "androidpublisher",
                "reason": "permissionDenied",
                "message": "The current user has insufficient permissions to perform the requested operation."
            }
        ],
        "code": 401,
        "message": "The current user has insufficient permissions to perform the requested operation."
    }
}**

Please tell me if any solutions . I follow all steps and get all done with play console and google cloud console account.