curl --request GET \
  --url https://www.closient.com/advertising/api/v1/reporting/organizations/{organization_id}/campaigns \
  --header 'X-API-Key: <api-key>'

{
  "organization_id": "<string>",
  "campaigns": [
    {
      "campaign_id": "<string>",
      "name": "<string>",
      "impressions": 123,
      "clicks": 123,
      "spend": "<string>",
      "ctr": "<string>"
    }
  ]
}