curl --request GET \
  --url https://scan.sv-1.global.canton.network.sync.global/api/scan/v0/internal/reward-accounting-process/rounds/{round_number}/activity-totals

{
  "status": "<string>",
  "round_number": 123,
  "total_app_activity_weight": 123,
  "active_parties_count": 123,
  "activity_records_count": 123
}