Any idea to POST data?

Do you have any idea how to use, configure this button, so that when pressed it makes a call equivalent to:

```shell
curl -X 'POST' 'http://localhost:5001/test/action' -H 'accept: application/json' -H 'Content-Type: application/json' -d '{"message": "hello world!"}'
```
?

best regards
isidoro ghezzi