curl --request GET \
  --url https://api.fluents.ai/v1/knowledge_bases/{kbId}/files \
  --header 'Authorization: Bearer <token>'

{
  "items": [
    {
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "label": "My Knowledge Base",
      "description": "This is a description"
    }
  ],
  "page": 123,
  "size": 123,
  "has_more": true,
  "total": 123,
  "total_is_estimated": true,
  "nextPageToken": "1234567890"
}