How to convert list of data/dictionary to json data

Question

Hi All, I'm trying to pass Json type data input (which is a rule from my interface sending it to process model via start process) to JsonToExcel Smart Service. I need the output format as below. Please advise. 
 expected sample output format - = "[{ ""startPublicationDate"": ""2021-09-05"",""endPublicationDate"": ""2021-09-05"" }]" 
 The challenge I see here is my rule has nested rules inside it and output is a list of dictionary.

revathis772076 · Answer

Try a!toJson to convert json.

Stefan Helzle · Answer

Did you test a!toJson? If yes, do you see any issues?

Shubham Aware · Answer

Seems to be similar thread. https://community.appian.com/discussions/f/process/40278/how-to-convert-below-rule-data-to-json-data