curl --request POST \
  --url https://api.polymarketexchange.com/v1/refdata/instruments \
  --header 'Content-Type: application/json' \
  --data '
{
  "pageSize": 123,
  "pageToken": "<string>",
  "symbols": [
    "<string>"
  ],
  "productId": "<string>",
  "tradableFilter": "TRADABLE_FILTER_TRADABLE",
  "states": [
    "INSTRUMENT_STATE_CLOSED"
  ],
  "eventSeries": "<string>",
  "eventCategory": "<string>",
  "clearingSym": "<string>",
  "startTimeGte": "<string>",
  "startTimeLte": "<string>",
  "endTimeGte": "<string>",
  "endTimeLte": "<string>",
  "filter": {
    "whereClause": "<string>",
    "fieldFilters": [
      {
        "field": "<string>",
        "operator": "FILTER_OPERATOR_UNSPECIFIED",
        "stringValue": "<string>",
        "stringList": {
          "values": [
            "<string>"
          ]
        }
      }
    ]
  }
}
'

{
  "instruments": [
    {
      "symbol": "<string>",
      "tickSize": 123,
      "baseCurrency": "<string>",
      "multiplier": 123,
      "minimumTradeQty": "<string>",
      "startDate": {
        "year": 123,
        "month": 123,
        "day": 123
      },
      "expirationDate": {
        "year": 123,
        "month": 123,
        "day": 123
      },
      "terminationDate": {
        "year": 123,
        "month": 123,
        "day": 123
      },
      "tradingSchedule": [
        {
          "daysOfWeek": [
            123
          ],
          "timeOfDay": {
            "hours": 123,
            "minutes": 123,
            "seconds": 123
          },
          "duration": "<string>",
          "state": "INSTRUMENT_STATE_CLOSED",
          "hideMarketData": true,
          "expireAllOrders": true
        }
      ],
      "description": "<string>",
      "clearingHouse": "<string>",
      "minimumUnaffiliatedFirms": "<string>",
      "nonTradable": true,
      "jsonAttributes": "<string>",
      "productId": "<string>",
      "priceLimit": {
        "low": "<string>",
        "high": "<string>",
        "lowSet": true,
        "highSet": true,
        "relativeLow": 123,
        "relativeHigh": 123,
        "relativeLowSet": true,
        "relativeHighSet": true
      },
      "orderSizeLimit": {
        "low": "<string>",
        "high": "<string>",
        "lowSet": true,
        "highSet": true,
        "totalNotionalLow": "<string>",
        "totalNotionalHigh": "<string>",
        "totalNotionalLowSet": true,
        "totalNotionalHighSet": true
      },
      "expirationTime": {
        "hours": 123,
        "minutes": 123,
        "seconds": 123
      },
      "tradeSettlementPeriod": "<string>",
      "state": "INSTRUMENT_STATE_CLOSED",
      "priceScale": "<string>",
      "fractionalQtyScale": "<string>",
      "settlementCurrency": "<string>",
      "settlementPriceScale": "<string>",
      "metadata": {},
      "eventAttributes": {
        "question": "<string>",
        "payoutValue": "<string>",
        "eventDisplayName": "<string>",
        "eventId": "<string>",
        "strikeValue": "<string>",
        "evaluationType": "<string>",
        "strikeUnit": "<string>",
        "calculationMethod": "<string>",
        "timeSpecifier": "<string>",
        "positionAccountabilityValue": "<string>"
      },
      "createTime": "2023-11-07T05:31:56Z",
      "updateTime": "2023-11-07T05:31:56Z"
    }
  ],
  "nextPageToken": "<string>",
  "eof": true
}