Contract(Contract)

{
    "contract": "string",
    "bid": 0,
    "ask": 0,
    "last": 0,
    "volume": 0,
    "open_interest": 0,
    "iv": 0,
    "delta": 0,
    "gamma": 0,
    "vega": 0,
    "theta": 0,
    "rho": 0,
    "theo": 0,
    "change": 0,
    "open": 0,
    "high": 0,
    "low": 0,
    "tick": "string"
}