import requests

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

payload = {
    "id": "<string>",
    "description": "<string>",
    "uniqueIdParameter": "<string>",
    "baseSignalsCollection": "<string>",
    "variants": [
        {
            "id": "<string>",
            "name": "<string>",
            "collection": "<string>",
            "queryPipeline": "<string>",
            "params": [
                {
                    "key": "<string>",
                    "value": "<string>",
                    "policy": "replace"
                }
            ],
            "weight": 123
        }
    ],
    "automaticallyAdjustTraffic": True,
    "enabled": True,
    "startTimestamp": "2023-11-07T05:31:56Z",
    "runId": "<string>",
    "metrics": [
        {
            "type": "<string>",
            "name": "<string>",
            "description": "<string>",
            "jobId": "<string>",
            "binary": True,
            "primary": True
        }
    ]
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

{}