How to do deep insert in SAPUI5?

Hi,

I am doing CRUD operations in SAPUI5 using Gateway service. In that I have to send data through Json for deep insert.I can create using Rest Client in firefox. But in my program I have to send the same data from Form. But I am in confusion how to send the data through Json for deep Insert.

Could you please send me a useful links regarding this .

Thanks&Regards

Sridevi