curl --request GET \
  --url https://api.polymarket.us/v1/orders/open \
  --header 'X-PM-Access-Key: <api-key>' \
  --header 'X-PM-Signature: <api-key>' \
  --header 'X-PM-Timestamp: <api-key>'

{
  "orders": [
    {
      "id": "<string>",
      "marketSlug": "<string>",
      "side": "ORDER_SIDE_BUY",
      "type": "ORDER_TYPE_LIMIT",
      "price": {
        "value": "0.55",
        "currency": "USD"
      },
      "quantity": 123,
      "cumQuantity": 123,
      "leavesQuantity": 123,
      "tif": "TIME_IN_FORCE_GOOD_TILL_CANCEL",
      "goodTillTime": "2023-11-07T05:31:56Z",
      "intent": "ORDER_INTENT_BUY_LONG",
      "marketMetadata": {
        "slug": "<string>",
        "icon": "<string>",
        "title": "<string>",
        "outcome": "<string>",
        "eventSlug": "<string>",
        "teamId": 123,
        "team": {
          "id": 123,
          "name": "<string>",
          "abbreviation": "<string>",
          "league": "<string>",
          "record": "<string>",
          "logo": "<string>",
          "alias": "<string>",
          "safeName": "<string>",
          "homeIcon": "<string>",
          "awayIcon": "<string>",
          "colorPrimary": "<string>",
          "ordering": "<string>",
          "ranking": "<string>",
          "conference": "<string>"
        }
      },
      "state": "ORDER_STATE_PARTIALLY_FILLED",
      "commissionNotionalTotalCollected": {
        "value": "0.55",
        "currency": "USD"
      },
      "commissionsBasisPoints": "<string>",
      "makerCommissionsBasisPoints": "<string>",
      "avgPx": {
        "value": "0.55",
        "currency": "USD"
      },
      "cashOrderQty": {
        "value": "0.55",
        "currency": "USD"
      },
      "insertTime": "2023-11-07T05:31:56Z",
      "createTime": "2023-11-07T05:31:56Z"
    }
  ]
}