用户帐户无权访问 App Annie Intelligence API

Question

当我尝试使用下面的 App Annie Intelligence API 时

https://api.appannie.com/v1.3/intelligence/apps/ios/market_size?data_break_down=country&categories=Overall&device=iphone&capsularity=monthly&start_date=2018-01-01

我得到以下403 forbidden错误。

{
    "code": 403,
    "error": "This user account does not have access to App Annie Intelligence API."
}

我可以知道如何启用 App Annie Intelligence API 的访问权限吗