curl --request GET \
  --url https://fcontext.com/api/aitaquote/quote/depth \
  --header 'x-api-key: <api-key>'

{
  "depth": {
    "asks": [
      {
        "position": 123,
        "price": "<string>",
        "volume": "<string>",
        "orderNum": 123
      }
    ],
    "bids": [
      {
        "position": 123,
        "price": "<string>",
        "volume": "<string>",
        "orderNum": 123
      }
    ]
  }
}