curl --request GET \
  --url https://gateway.architect.exchange/api/book \
  --header 'Authorization: Bearer <token>'

{
  "book": {
    "tn": 1,
    "ts": 123,
    "a": [
      {
        "p": "<string>",
        "q": 1,
        "o": [
          1
        ]
      }
    ],
    "b": [
      {
        "p": "<string>",
        "q": 1,
        "o": [
          1
        ]
      }
    ],
    "s": "<string>"
  }
}