Get metrics such as impressions or reactions about your pages and aggregate results by day, week or month.
The username of your Facebook page. For example:
One or more metrics to retrieve about the acccount. By default, you get metrics about tab views, engaged users, page impressions, as well as positive and negative feedback about your page.
For a complete list of possible metrics, see the Facebook Insights API documentation.
Aggregation period of the data. For example:
Date range to get insights for. Can be a period of up to 93 days.
"[2019-01-01;2019-01-20]". By default, it gets the last two days.