{
  "jsonrpc": "2.0",
  "id": 2148,
  "method": "private/sell",
  "params": {
    "instrument_name": "ETH-PERPETUAL",
    "amount": 123,
    "type": "stop_limit",
    "price": 145.61,
    "trigger_price": 145,
    "trigger": "last_price"
  }
}