Datasets to power the Market Depth chart.
Both bids and asks are lists of 2-item tuples: [price, volume]

Additionally there are aggregate values provided for both sides of the book
and both quote and base currencies (in that order) under the totals key:

totals = [
[amount of quote currency in bids, amount of base currency in bids],
[amount of quote currency in asks, amount of base currency in asks],
]

A nice article explaining how the Depth Chart works:
https://hackernoon.com/depth-chart-and-its-significance-in-trading-bdbfbbd23d33

GET /api/public/market/ogc-usdt/depth/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: public, s-maxage=1
Content-Type: application/json
Vary: Accept

{
    "bids": [
        [
            "20",
            "0.0042"
        ]
    ],
    "asks": [
        [
            "54.9",
            "1"
        ],
        [
            "54.98",
            "1.12"
        ],
        [
            "54.99",
            "3.12"
        ],
        [
            "54.9995",
            "4.62"
        ],
        [
            "54.9996",
            "30.62"
        ],
        [
            "55",
            "82.59875"
        ],
        [
            "73.679998",
            "82.79875"
        ],
        [
            "75",
            "83.79875"
        ],
        [
            "100",
            "84.79875"
        ],
        [
            "105",
            "85.79875"
        ],
        [
            "120",
            "86.695839"
        ],
        [
            "120.5",
            "87.495839"
        ],
        [
            "130",
            "88.495839"
        ],
        [
            "147.7",
            "93.495839"
        ],
        [
            "149",
            "93.505839"
        ],
        [
            "150",
            "103.505839"
        ],
        [
            "200",
            "108.505839"
        ],
        [
            "250",
            "113.505839"
        ],
        [
            "450",
            "113.988518"
        ],
        [
            "999",
            "212.988518"
        ],
        [
            "1000",
            "262.988518"
        ]
    ],
    "totals": [
        [
            "0.084",
            "0.0042"
        ],
        [
            "158779.77993",
            "262.988518"
        ]
    ]
}