```
url = "https://example.com/jira/rest/api/2/issue/issue_key/comment"
data = json.dumps({"body": 'some string'})
headers = {'content-type':'application/json'}
r = requests.post(url, data, auth=('username', 'password'))

```

--> `r.status_code` output is `415`.

But in case of 

```
r = requests.get(url, data, auth=('username', 'password'))

```

--> `r.status_code` output is `200`. Please help me to identify issue.