How to use developerPayload in react-native-iap

[majaeseong]

I'm trying to provide a Google subscription service using the react-native-iap API.

I'm trying to enter data into the developerPayload value to split the service.

const result = await requestSubscription(
      sku,
      false,
      offerToken,
      developerPayload,
    );

ChatGPT told me to use it as above. However, there is no function in their API that takes the arguments as listed.

How can I use it?

API version : 12.10.2

Thank you for read my question :)