curl --request GET \
  --url http://localhost:3000/projects/{projectId}/flags/{id} \
  --header 'Authorization: Bearer <token>'

{
  "statusCode": 123,
  "message": "OK",
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "project_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "name": "<string>",
    "key": "<string>",
    "type": "boolean",
    "description": "<string>",
    "is_active": true,
    "client_side_enabled": true,
    "analytics_enabled": true,
    "metadata": {},
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "archived_at": "2023-11-07T05:31:56Z",
    "deleted_at": "2023-11-07T05:31:56Z",
    "environments": []
  }
}