import requests

url = "https://{FUSION HOST}/api/realm-configs"

payload = {
    "name": "<string>",
    "realmType": "<string>"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.json())

{
  "id": "<string>",
  "name": "<string>",
  "enabled": true,
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "realmType": "<string>"
}