curl --request PUT \
  --url https://api.{your-broker}.slate-labs.com/groups/{group_id}/instruments/{symbol} \
  --header 'Content-Type: application/json' \
  --data '
{
  "tradeability": "<string>",
  "spread": 50,
  "margin_rate": 0.5005,
  "swap_type": "<string>",
  "swap_long": 0,
  "swap_short": 0,
  "commission_type": "<string>",
  "commission_value": 25,
  "min_lot": 500.0005,
  "max_lot": 5000.0005,
  "lot_step": 50.0005,
  "max_symbol_exposure": 1
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "group_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "instrument_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "symbol": "<string>",
  "tradeability": "<string>",
  "spread": 123,
  "margin_rate": 123,
  "swap_type": "<string>",
  "swap_long": 123,
  "swap_short": 123,
  "commission_type": "<string>",
  "commission_value": 123,
  "min_lot": 123,
  "max_lot": 123,
  "lot_step": 123,
  "max_symbol_exposure": 123
}