curl --request GET \
  --url https://sis.sumvin.com/v0/organisation/{org_id}/environments/{env_id}/features/ \
  --header 'Authorization: Bearer <token>'

{
  "_links": {
    "self": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    },
    "environment": {
      "href": "<string>",
      "method": "GET",
      "templated": false,
      "description": "<string>"
    }
  },
  "items": [
    {
      "enabled": true,
      "config": {},
      "created_at": 123,
      "updated_at": 123
    }
  ]
}