API update user

[Damien]

Hi everybody,
I can't find how I can update policies by admin API key and request. Server always respond with an 400 error.
But I read the doc and I cannot find it out.
Here simple python code that fails :

import requests

ADMIN_API_KEY = 'myadminapikey'
JELLYFIN_SERVER_URL = 'myjellyfinserverurl'
JELLYFIN_USER_ID = 'ajellyfinuserid'

headers = {
    "Authorization": f'MediaBrowser Token="{ADMIN_API_KEY}"',
    "Content-Type": "application/json"
}

data = {
    'EnableAllChannels': False,
    'EnableAllFolders': False,
    'EnableContentDownloading': False,
    'EnableLiveTvAccess': False,
    'EnableLiveTvManagement': False,
    'EnableSharedDeviceControl': False,
    'SyncPlayAccess': None,
}
   
response = requests.post(f'{JELLYFIN_SERVER_URL}/Users/{JELLYFIN_USER_ID}/Policy', headers=headers, json=data)
print(response.status_code)

Thank you for your help !

Best regards

Damien