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": [
        [
            "5",
            "7.248952"
        ],
        [
            "10",
            "5.248952"
        ],
        [
            "15",
            "3.248952"
        ],
        [
            "20",
            "2.248952"
        ],
        [
            "25",
            "2"
        ],
        [
            "26",
            "1"
        ]
    ],
    "asks": [
        [
            "54.88",
            "5"
        ],
        [
            "54.89",
            "5.102212"
        ],
        [
            "54.9",
            "6.102212"
        ],
        [
            "54.98",
            "21.222212"
        ],
        [
            "54.99",
            "23.222212"
        ],
        [
            "54.9995",
            "24.722212"
        ],
        [
            "54.9996",
            "50.722212"
        ],
        [
            "55",
            "102.700962"
        ],
        [
            "73.679998",
            "102.900962"
        ],
        [
            "75",
            "103.900962"
        ],
        [
            "100",
            "369.949053"
        ],
        [
            "105",
            "370.949053"
        ],
        [
            "120",
            "371.846142"
        ],
        [
            "130",
            "372.846142"
        ],
        [
            "147.7",
            "377.846142"
        ],
        [
            "149",
            "377.856142"
        ],
        [
            "150",
            "387.856142"
        ],
        [
            "200",
            "392.856142"
        ],
        [
            "250",
            "397.856142"
        ],
        [
            "450",
            "398.338821"
        ],
        [
            "999",
            "497.338821"
        ],
        [
            "1000",
            "547.338821"
        ]
    ],
    "totals": [
        [
            "100.97904",
            "7.248952"
        ],
        [
            "186292.899447",
            "547.338821"
        ]
    ]
}