curl --request GET \
  --url https://api.collectpure.com/products/get-product-order-book/v1 \
  --header 'x-api-key: <api-key>'

{
  "data": {
    "listings": [
      {
        "price": 123,
        "qty": 123,
        "spotPremium": 123,
        "spotPremiumDollar": 123,
        "isUsersOrder": true,
        "usersQty": 123
      }
    ],
    "offers": [
      {
        "price": 123,
        "qty": 123,
        "spotPremium": 123,
        "spotPremiumDollar": 123,
        "isUsersOrder": true,
        "usersQty": 123
      }
    ]
  }
}