A[][]string`json:"a"`// Ask, seller. Sorted by price in ascending order. a[0]: Ask price, a[1]: Ask size.
B[][]string`json:"b"`// Bid, buyer. Sorted by price in descending order. b[0]: Bid price, b[1]: Bid size.
Tsint64`json:"ts"`// The timestamp (ms) that the system generates the data.
Uint`json:"u"`// Update ID, is always in sequence.
Seqint`json:"seq"`// Cross sequence.
Ctsint64`json:"cts"`// The timestamp from the matching engine when this orderbook data is produced. It can be correlated with T from public trade channel.