import requests

url = "https://{FUSION HOST}/api/spark/configurations/{id}"

payload = {
    "id": "<string>",
    "sparkConfig": [
        {
            "key": "<string>",
            "value": "<string>"
        }
    ],
    "type": "<string>"
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.json())

{
  "id": "<string>",
  "sparkConfig": [
    {
      "key": "<string>",
      "value": "<string>"
    }
  ],
  "type": "<string>"
}