recipe to explode row into multiple rows

Hi,

I am looking for a way to explode a row into multiple rows. A cell of the input row contains a deeply nested json with datapoints. I want to unpack the json and create rows for each of the datapoints inside the json. Is there any way to do this, either by existing recipes or using a python script?

I used a python script in my current attempt and I am able to get at the values. But it seems that I can only return one output row per input row.

Please advice.