import json, ssl, urllib.request

ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE

ZABBIX_URL = 'http://140.44.4.60:8888/api_jsonrpc.php'

payload = {'jsonrpc': '2.0', 'method': 'user.login', 'params': {'username': 'Admin', 'password': 'zabbix'}, 'id': 1}
req = urllib.request.Request(ZABBIX_URL, data=json.dumps(payload).encode(), headers={'Content-Type': 'application/json-rpc'})
token = json.loads(urllib.request.urlopen(req, context=ctx).read())['result']

media_payload = {
    'jsonrpc': '2.0',
    'method': 'user.update',
    'params': {
        'userid': '3',
        'medias': [
            {
                'mediatypeid': '70',
                'sendto': 'snarf@snarfnet.net',
                'active': 0,
                'severity': 63, # 1+2+4+8+16+32
                'period': '1-7,00:00-24:00'
            }
        ]
    },
    'id': 2
}
req = urllib.request.Request(ZABBIX_URL, data=json.dumps(media_payload).encode(), headers={'Content-Type': 'application/json-rpc', 'Authorization': f'Bearer {token}'})
res = json.loads(urllib.request.urlopen(req, context=ctx).read())
print("User update result:", res)