Triggering a signal activity - Call workflow with parameters using a payload with parameters on JSON format (object x array)

Hi There!

I've just tried call a workflow with a JSON object with sucess. See below a JSON object format sample that I used.

Now I need send more than one objects in the same time using a JSON array format. But there is an error like this: "'0' parameter isn't defined in signal activity."

Question. Does the TSA only accept JSON object format? See below a JSON array format sample that I'm trying use.

In Adobe's documentation, so far I have found no reference for JSON type and format on "Triggering a signal activity ". Or some information on limitations of this service.

https://experienceleague.adobe.com/docs/campaign-standard/using/working-with-apis/managing-workflows/triggering-a-signal-activity.html?lang=en

In other words, I'd like use the JSON array instead JSON object.

Regards

Paulo