curl --request GET \
  --url https://api.interchange.io/api/v2/storefront/esa/{esaId}/buyer-advertiser-mappings \
  --header 'Authorization: Bearer <token>'

{
  "mappings": [
    {
      "id": "<string>",
      "operatorDomain": "<string>",
      "gamAdvertiserId": "<string>",
      "createdAt": "<string>",
      "updatedAt": "<string>",
      "brandHouse": "<string>",
      "brandId": "<string>",
      "principalId": "<string>"
    }
  ]
}