Issue with API call to pas a list in JSON body

Hi everyone,

I have trouble setting-up an API call to my client middleware, I have to retrieve data passing a list of parameters as filters

The call is working fine in Postman but same parameters are returning an error in Bubble (200 ok!)

It looks like the JSON body is incorrectly written to pass a list of data (sn here)

For now I tried only to pass static sn parameters to initialize but in the end, it would be a dynamic list

Does anyone know how to fix this?

You can see details of the Bubble and Postman calls in screenshots attached

Thank you very much