request available sort options to use in keyword search

{
  "type": "object",
  "properties": {
    "responseMessage": {
      "type": "string"
    },
    "responseStatus": {
      "type": "string"
    },
    "resultSize": {
      "type": "integer",
      "format": "int64"
    },
    "sortOptions": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "order": {
            "type": "integer",
            "format": "int64"
          },
          "sortName": {
            "type": "string"
          },
          "strategy": {
            "type": "string"
          }
        }
      }
    }
  }
}