Get floor price history by collection

curl --request GET \
  --url https://api.chainbase.online/v1/nft/price/history \
  --header 'x-api-key: <x-api-key>'

{
  "code": 0,
  "message": "ok",
  "data": [
    {
      "floor_price": 123,
      "symbol": "<string>",
      "updated_at": "<string>"
    }
  ]
}