Adding Data to Subform via Node.js API in Zoho Creator.

Adding Data to Subform via Node.js API in Zoho Creator.

I hope you're doing well. I'm currently working on a project in Zoho Creator and facing a challenge with adding data to a subform using the Node.js API. While I've succeeded in updating data within the subform, I'm unable to find a solution for adding new entries programmatically. Could you please provide guidance or documentation on achieving this? Your help would be greatly appreciated.
I am attaching the document link Where I have added my code how I tried.
Please look into that: Document-Link

Thank you