curl --request GET \
  --url https://app.herondata.io/api/merchants/{heron_id} \
  --header 'x-api-key: <api-key>'

{
  "merchant": {
    "categories": [
      {
        "code": "7311",
        "description": "Advertising services",
        "slug": "advertising_services"
      }
    ],
    "group_id": "Uber",
    "heron_id": "mrc_ZT5konJj9aNvhqR7gnd6Af",
    "icon_url": "<string>",
    "is_priority": true,
    "logo_url": "<string>",
    "name": "<string>",
    "url": "<string>"
  }
}