curl --location --request GET 'https://slack.com/api/team.billableInfo?token='{
    "billable_info": {
        "U02UCPE1R": {
            "billing_active": true
        },
        "U02UEBSD2": {
            "billing_active": true
        },
        "U0632EWRW": {
            "billing_active": false
        }
    },
    "ok": true
}