How do I point a subdomain to different ip to host a service ?

Take a look through this guide: https://www.linode.com/docs/guides/dns-manager/

thank you , Now I am trying to update the domain ip but I get 400 response.

TOKEN = 'abcdefghigjlmnopq_assumed_example'
PAYLOAD = {
      "type": "A",
      "name": "test",
      "target": '192.168.1.1',
      "priority": 50,
      "weight": 50,
      "port": 80,
      "ttl_sec": 604800
    }

URL =  "https://api.linode.com/v4/domains/{did}/records/{rid}".format(did=1111111, rid=2222222)

def main():
    headers = {
        'content-type': 'application/json',
        'Authorization': 'Bearer {tkn}'.format(tkn=TOKEN)
        }
    resp = requests.put(URL, data=json.dumps(PAYLOAD), headers=headers)
    print(resp.status_code)

if __name__ == '__main__':
    main()

Fixed