{
  "id":1,
  "type": "dataQuery",
  "data": {
    "schemaKeys": {
      "publisher":"google",
      "advertiser":"microsoft",
      "location":"CA"
    },
    "fields": ["boolField", "doubleField"]
  },
  "incompleteResultOK":true,
  "countdown":10,
  "blahblahblahinvalid":"a"
}