Missing required params

[hvta]

I'm trying to create a task with the POST /api/task resource and send the following JSON data:

{
    "name":"TYS-123456 issue name",
    "description":"some description",
    "project_id":123456,
    "tasklist_id":654321
}

After sending this I get a "Missing required params: name, tasklist_id or project_id". However, all three parameters are given and are valid.

[hvta]

I've managed to send a request by not sending a JSON request body.