Amazon Swf Executiontimefilter Structure

{
  "name": "ExecutionTimeFilter",
  "description": "Used to filter the workflow executions in visibility APIs by various time-based rules. Each parameter, if specified, defines a rule that must be satisfied by each returned query result. The parameter values are in the <a href=\"https://en.wikipedia.org/wiki/Unix_time\">Unix Time format</a>. For example: <code>\"oldestDate\": 1325376070.</code> ",
  "type": "object",
  "properties": [
    {
      "name": "oldestDate",
      "type": "string",
      "description": "",
      "required": true
    },
    {
      "name": "latestDate",
      "type": "string",
      "description": "",
      "required": false
    }
  ]
}