List Narratives

curl --request GET \
  --url https://api.upriver.ai/v1/topics/breakout/narratives \
  --header 'X-API-Key: <api-key>'

{
  "narratives": [
    {
      "narrative_id": "<string>",
      "display_name": "<string>",
      "vertical": "<string>",
      "member_count": 123,
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "slug": "<string>",
      "description": "<string>"
    }
  ]
}