Create Gateway

{
  "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>"
}