curl --request PATCH \
  --url https://api.perpetuals.polymarket.com/v1/trade/leverage \
  --header 'Content-Type: application/json' \
  --data '
{
  "op": {
    "type": "updateLeverage",
    "args": {
      "iid": 1,
      "lev": 5,
      "cross": false
    }
  },
  "sig": "0x59ed57f6dce8d15aa01e774ef53d9957c84801fb34ec655f6a2ea344af8a58843095314730a3f1bd8f0f4560f6dc6f8de69d3f2d0a6f3365fc877f7f4845d40b1c",
  "salt": 333333333,
  "ts": 1767000012000
}
'

{
  "status": "ok",
  "instrument_id": 1,
  "leverage": 10,
  "cross": true
}