Pass in StoreKitTransaction’s “base64EncodedTransactionReceipt” property as the receipt.
signature parameter
Pass in null since this is not used.
For Android
To validate Android monetization, please enter your Google Public API Key in your Analytics dashboard Project Settings Form.
The Google Public API Key is needed for implementing receipt verification for in-app purchases (IAP) on Google Play. Your Google Public Key is under Google Play Developer console > All applications > Services & APIs > Your License Key For This Application. This is optional, but if you are developing for Android and have in-app purchases, we highly recommend implementing it.
receipt parameter
If you leave this as null, this transaction will show up as Unverified Revenue
If you are writing a Native Android plugin
Pass in the the purchase data for the order, which is a String in JSON format that is mapped to the INAPP_PURCHASE_DATA key in the response Intent.