json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "type": "object",
      "description": "Advertisement status for the supplied advertisement",
      "properties": {
          "advertisementId": {
              "type": "string"
          },
          "status": {
              "enum": [
                  "open",
                  "expired"
              ]
          },
          "postedBy": {
              "type": "string"
          },
          "datePosted": {
              "type": "number"
          },
          "expiredBy": {
              "type": "string"
          },
          "dateExpired": {
              "type": "number"
          },
          "title": {
              "type": "string"
          },
          "referenceCode": {
              "type": "string"
          }
      },
      "additionalProperties": false
  }