The API calls return a JSON object as response, from which you would be able to access the relevant elements.
For example, for the list subscriptions API call, if your variable is called $create_asset_ids, you can access the subsription object element using $create_asset_ids->subscription();
You can find the sample API call and response here.
Let us know if you need more clarification.
We are integrating your api in our project. But after configuring the chargeBee environment, we call ChargeBee_Subscription::all() it returns the object instead of json data. Is is right or something is wrong with me?