{
  "campaign": {
    "properties": {
      "cost": {
        "type": "double"
      },
      "startDate": {
        "type": "date"
      },
      "endDate": {
        "type": "date"
      },
      "metadata": {
        "properties": {
          "enabled": {
            "type": "boolean"
          },
          "hidden": {
            "type": "boolean"
          },
          "missingPlugins": {
            "type": "boolean"
          },
          "readOnly": {
            "type": "boolean"
          }
        }
      }
    }
  }
}