InsightMetric
Possible values: [account:balance:sum, account:balance:min, account:balance:max, account:balance:range, account:balance:oldest, account:balance:latest, account:balance:average, account:transaction:count, account:transaction:amount:sum, account:transaction:amount:min, account:transaction:amount:max, account:transaction:amount:range, account:transaction:amount:oldest, account:transaction:amount:latest, account:transaction:amount:average, account:transaction:amount:average:day, account:transaction:amount:average:week, account:transaction:amount:average:month, account:transaction:amount:average:year, account:transaction:created:range:day, account:transaction:created:range:week, account:transaction:created:range:month, account:transaction:created:range:year, account:transaction:created:oldest, account:transaction:created:latest, charity:account:transaction:amount:sum]
"account:balance:sum"