get
GET /v1/market/depth HTTP/1.1
Host: testnetopenapi.hibit.app
Accept: */*
{
  "code": 1,
  "message": "text",
  "data": {
    "asks": [
      [
        "text"
      ]
    ],
    "bids": [
      [
        "text"
      ]
    ]
  }
}