curl --request GET \
  --url https://api.hubapi.com/marketing/campaigns/2026-03/{campaignGuid}/assets/{assetType} \
  --header 'Authorization: Bearer <token>'

{
  "results": [
    {
      "id": "<string>",
      "metrics": {},
      "name": "<string>"
    }
  ],
  "paging": {
    "next": {
      "after": "<string>",
      "link": "<string>"
    }
  }
}