import requests

url = "https://{FUSION HOST}/api/oauth2/certificate"

response = requests.get(url)

print(response.json())

{
  "keys": [
    {
      "kty": "RSA",
      "use": "sig",
      "kid": "1b94c",
      "n": "0vx7...",
      "e": "AQAB",
      "alg": "RS256"
    }
  ]
}