use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};
use crate::bid_ask::BidAsk;
#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct PriceBook {
pub product_id: String,
pub bids: Vec<BidAsk>,
pub asks: Vec<BidAsk>,
pub time: Option<DateTime<Utc>>,
}