sellers.json 

{
  "contact_email": "mediasolutions@bluebillywig.com",
  "contact_address": "Blue Billywig, Catharina van Renneslaan 20, 1217 CX Hilversum, Netherlands",
  "version": "1.0",
  "identifiers": [{
    "name": "TAG-ID",
    "value": "bbw-0001"
  }],
  "sellers": [
    {
      "seller_id": "bbw-0001", 
      "name": "Iconic Newspapers", 
      "domain": "mediaforcegroup.co.uk", 
      "seller_type": "BOTH"
    }
  ]
}