Using the request body

The request body must be a top-level JSON object that contains all the parameters as its properties.

$ API=https://manager.example.com/rhn/manager/api
$ curl -H "Content-Type: application/json" --cookie "pxt-session-cookie<tokenhash>;" \
> -d '{"projectLabel":"myproject","name":"My Project","description":""}' \
> $API/contentmanagement/createProject
{
  "success": true,
  "result": {
    "name": "My Project",
    "id": 1,
    "label": "myproject",
    "orgId": 1
  }
}