{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "campaign_duration",
  "type": "object",
  "description": "Duration of campaigns must not exceed 36 months",
  "properties": {
    "start_date": {
      "type": "string",
      "format": "date-time"
    },
    "end_date": {
      "type": "string",
      "format": "date-time"
    }
  }
}