monitor will print the received events for:
UDEV - the event which udev sends out after rule processing

UDEV  [2912.523859] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5 (usb)
ACTION=add
BUSNUM=004
DEVNAME=/dev/bus/usb/004/005
DEVNUM=005
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5
DEVTYPE=usb_device
ID_BUS=usb
ID_MODEL=Voyager
ID_MODEL_ENC=Voyager
ID_MODEL_ID=1ab1
ID_REVISION=1100
ID_SERIAL=Corsair_Voyager_AA40000000000825
ID_SERIAL_SHORT=AA40000000000825
ID_USB_INTERFACES=:080650:
ID_VENDOR=Corsair
ID_VENDOR_ENC=Corsair
ID_VENDOR_FROM_DATABASE=Corsair
ID_VENDOR_ID=1b1c
MAJOR=189
MINOR=388
PRODUCT=1b1c/1ab1/1100
SEQNUM=2842
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=12510798

UDEV  [2912.524889] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0
DEVTYPE=usb_interface
ID_VENDOR_FROM_DATABASE=Corsair
INTERFACE=8/6/80
MODALIAS=usb:v1B1Cp1AB1d1100dc00dsc00dp00ic08isc06ip50in00
PRODUCT=1b1c/1ab1/1100
SEQNUM=2843
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=511079

UDEV  [2912.525547] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15
DEVTYPE=scsi_host
SEQNUM=2844
SUBSYSTEM=scsi
USEC_INITIALIZED=511354

UDEV  [2912.526200] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/scsi_host/host15 (scsi_host)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/scsi_host/host15
SEQNUM=2845
SUBSYSTEM=scsi_host
USEC_INITIALIZED=511399

UDEV  [2913.597245] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0
DEVTYPE=scsi_target
SEQNUM=2846
SUBSYSTEM=scsi
USEC_INITIALIZED=596808

UDEV  [2913.597725] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0
DEVTYPE=scsi_device
MODALIAS=scsi:t-0x00
SEQNUM=2847
SUBSYSTEM=scsi
USEC_INITIALIZED=596869

UDEV  [2913.598182] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_disk/15:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_disk/15:0:0:0
SEQNUM=2848
SUBSYSTEM=scsi_disk
USEC_INITIALIZED=596889

UDEV  [2913.598680] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_device/15:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_device/15:0:0:0
SEQNUM=2849
SUBSYSTEM=scsi_device
USEC_INITIALIZED=13596911

UDEV  [2913.598830] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/bsg/15:0:0:0 (bsg)
ACTION=add
DEVNAME=/dev/bsg/15:0:0:0
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/bsg/15:0:0:0
MAJOR=252
MINOR=5
SEQNUM=2851
SUBSYSTEM=bsg
USEC_INITIALIZED=13597338

UDEV  [2913.598850] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_generic/sg5 (scsi_generic)
ACTION=add
DEVNAME=/dev/sg5
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/scsi_generic/sg5
MAJOR=21
MINOR=5
SEQNUM=2850
SUBSYSTEM=scsi_generic
USEC_INITIALIZED=13597187

UDEV  [2913.600295] add      /devices/virtual/bdi/8:48 (bdi)
ACTION=add
DEVPATH=/devices/virtual/bdi/8:48
SEQNUM=2852
SUBSYSTEM=bdi
USEC_INITIALIZED=600064

UDEV  [2913.666366] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/block/sdd (block)
ACTION=add
DEVLINKS=/dev/disk/by-id/usb-Corsair_Voyager_AA40000000000825-0:0 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdd
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/block/sdd
DEVTYPE=disk
ID_BUS=usb
ID_INSTANCE=0:0
ID_MODEL=Voyager
ID_MODEL_ENC=Voyager\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=1ab1
ID_PART_TABLE_TYPE=dos
ID_PATH=pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0
ID_PATH_TAG=pci-0000_00_1d_7-usb-0_5_1_0-scsi-0_0_0_0
ID_REVISION=1100
ID_SERIAL=Corsair_Voyager_AA40000000000825-0:0
ID_SERIAL_SHORT=AA40000000000825
ID_TYPE=disk
ID_USB_DRIVER=usb-storage
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Corsair
ID_VENDOR_ENC=Corsair\x20
ID_VENDOR_ID=1b1c
MAJOR=8
MINOR=48
SEQNUM=2853
SUBSYSTEM=block
TAGS=:systemd:
USEC_INITIALIZED=605660

UDEV  [2913.718409] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/block/sdd/sdd1 (block)
ACTION=add
DEVLINKS=/dev/disk/by-id/usb-Corsair_Voyager_AA40000000000825-0:0-part1 /dev/disk/by-label/MOVIES /dev/disk/by-path/pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0-part1 /dev/disk/by-uuid/F39C-1A10
DEVNAME=/dev/sdd1
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-5/4-5:1.0/host15/target15:0:0/15:0:0:0/block/sdd/sdd1
DEVTYPE=partition
ID_BUS=usb
ID_FS_LABEL=MOVIES
ID_FS_LABEL_ENC=MOVIES
ID_FS_TYPE=vfat
ID_FS_USAGE=filesystem
ID_FS_UUID=F39C-1A10
ID_FS_UUID_ENC=F39C-1A10
ID_FS_VERSION=FAT32
ID_INSTANCE=0:0
ID_MODEL=Voyager
ID_MODEL_ENC=Voyager\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=1ab1
ID_PART_ENTRY_DISK=8:48
ID_PART_ENTRY_NUMBER=1
ID_PART_ENTRY_OFFSET=2
ID_PART_ENTRY_SCHEME=dos
ID_PART_ENTRY_SIZE=15663102
ID_PART_ENTRY_TYPE=0xb
ID_PART_TABLE_TYPE=dos
ID_PATH=pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0
ID_PATH_TAG=pci-0000_00_1d_7-usb-0_5_1_0-scsi-0_0_0_0
ID_REVISION=1100
ID_SERIAL=Corsair_Voyager_AA40000000000825-0:0
ID_SERIAL_SHORT=AA40000000000825
ID_TYPE=disk
ID_USB_DRIVER=usb-storage
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_VENDOR=Corsair
ID_VENDOR_ENC=Corsair\x20
ID_VENDOR_ID=1b1c
MAJOR=8
MINOR=49
SEQNUM=2854
SUBSYSTEM=block
TAGS=:systemd:
USEC_INITIALIZED=605711