curl --request GET \
  --url https://app.herondata.io/api/funders/linked \
  --header 'x-api-key: <api-key>'

{
  "funders": [
    {
      "aliases": [
        "<string>"
      ],
      "classification_instructions": "<string>",
      "created": "2023-11-07T05:31:56Z",
      "email_domains": [
        "<string>"
      ],
      "extraction_instructions": "<string>",
      "heron_id": "<string>",
      "last_updated": "2023-11-07T05:31:56Z",
      "logo_url": "<string>",
      "merchant_heron_id": "<string>",
      "name": "<string>",
      "offer_email_instructions": "<string>",
      "offer_portal_instructions": "<string>",
      "slug": "<string>",
      "submission_email_address": "<string>"
    }
  ]
}