Read metadata on a FB custom audience
fbad_read_audience(fbacc, audience_id, fields = c("id", "account_id",
"approximate_count", "data_source", "delivery_status",
"lookalike_audience_ids", "lookalike_spec", "name", "permission_for_actions",
"operation_status", "subtype", "time_updated"))custom audience ID
(optional) FB_Ad_account object, which defaults to the last returned object of fbad_init.
numeric
character vector of fields to be returned
https://developers.facebook.com/docs/marketing-api/custom-audience-targeting/v2.4#read