import requests

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

headers = {"Authorization": "Basic <encoded-value>"}

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

print(response.json())

{
  "contentType": "<string>",
  "mediaType": {
    "type": "<string>",
    "subtype": "<string>",
    "parameters": {},
    "wildcardType": true,
    "wildcardSubtype": true
  },
  "contentCharset": "<string>"
}