Get Advertiser by IDget https://sandbox-api.viantinc.com/{basePath}/advertiser/{advertiserId}Returns details of an Advertiser, specified by ID.Request GET /advertiser/456 Response { "messages": [], "entity": [ { "id": 456, "name": "Old Advertiser", "agencyId": 123, "currency": "USD", "category": "IAB1", "timezoneName": "ET", "externalAdvertiserId": "123#Test" } ] }