{
  "DomainGroup1": [
    {"domain": "www.a.com"},
    {"domain": "www.b.com"},
    {"domain": "www.c.com"}
  ],
  "DomainGroup2": [
    {"domain": "www.d.com"},
    {"domain": "www.e.com"},
    {"domain": "www.f.com"}
  ]
}