header {
  gtfs_realtime_version: "1.0"
  timestamp: 1611473317
}
entity {
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  vehicle {
    trip {
      trip_id: "1504775"
      schedule_relationship: SCHEDULED
      route_id: "4377"
    }
    position {
      latitude: 43.185368
      longitude: -79.90491
      bearing: 314.05
      odometer: 3.22182096E8
      speed: 0.356973
    }
    timestamp: 1611472189
    stop_id: "355981"
    vehicle {
      id: "411"
      label: "1111"
    }
  }
}