List Gateways

[
  {
    "created_at": "<string>",
    "id": "<string>",
    "name": "<string>",
    "required_plugins": [
      {
        "enabled": true,
        "id": "<string>",
        "level": "gateway",
        "name": "<string>",
        "parallel": true,
        "priority": 123,
        "settings": {},
        "stage": "pre_request"
      }
    ],
    "status": "<string>",
    "subdomain": "<string>",
    "updated_at": "<string>"
  }
]