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

UDEV  [1306907979.361196] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2
SUBSYSTEM=usb
DEVNAME=/dev/bus/usb/006/002
DEVTYPE=usb_device
DEVICE=/proc/bus/usb/006/002
PRODUCT=2345/101/1
TYPE=0/0/0
BUSNUM=006
DEVNUM=002
SEQNUM=1847
ID_VENDOR=Zowie
ID_VENDOR_ENC=Zowie
ID_VENDOR_ID=2345
ID_MODEL=Zowie঵閶脂镢
ID_MODEL_ENC=Zowie঵閶脂镢
ID_MODEL_ID=0101
ID_REVISION=0001
ID_SERIAL=Zowie_Zowie঵閶脂镢
ID_BUS=usb
ID_USB_INTERFACES=:030101:030000:
MAJOR=189
MINOR=641

UDEV  [1306907979.361443] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1
SUBSYSTEM=usb
DEVTYPE=usb_interface
DEVICE=/proc/bus/usb/006/002
PRODUCT=2345/101/1
TYPE=0/0/0
INTERFACE=3/0/0
MODALIAS=usb:v2345p0101d0001dc00dsc00dp00ic03isc00ip00
SEQNUM=1853

UDEV  [1306907979.361845] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/0003:2345:0101.0006 (hid)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/0003:2345:0101.0006
SUBSYSTEM=hid
HID_ID=0003:00002345:00000101
HID_NAME=Zowie Zowie঵閶脂镢
HID_PHYS=usb-0000:00:1d.0-2/input1
MODALIAS=hid:b0003v00002345p00000101
SEQNUM=1854

UDEV  [1306907979.362173] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/0003:2345:0101.0006/hidraw/hidraw5 (hidraw)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/0003:2345:0101.0006/hidraw/hidraw5
SUBSYSTEM=hidraw
DEVNAME=/dev/hidraw5
SEQNUM=1857
MAJOR=251
MINOR=5

UDEV  [1306907979.362296] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0
SUBSYSTEM=usb
DEVTYPE=usb_interface
DEVICE=/proc/bus/usb/006/002
PRODUCT=2345/101/1
TYPE=0/0/0
INTERFACE=3/1/1
MODALIAS=usb:v2345p0101d0001dc00dsc00dp00ic03isc01ip01
SEQNUM=1848

UDEV  [1306907979.362845] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/0003:2345:0101.0005 (hid)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/0003:2345:0101.0005
SUBSYSTEM=hid
HID_ID=0003:00002345:00000101
HID_NAME=Zowie Zowie঵閶脂镢
HID_PHYS=usb-0000:00:1d.0-2/input0
MODALIAS=hid:b0003v00002345p00000101
SEQNUM=1849

UDEV  [1306907979.363128] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/0003:2345:0101.0005/hidraw/hidraw4 (hidraw)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/0003:2345:0101.0005/hidraw/hidraw4
SUBSYSTEM=hidraw
DEVNAME=/dev/hidraw4
SEQNUM=1852
MAJOR=251
MINOR=4

UDEV  [1306907979.380030] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/input/input20 (input)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/input/input20
SUBSYSTEM=input
PRODUCT=3/2345/101/111
NAME="Zowie Zowie঵閶脂镢"
PHYS="usb-0000:00:1d.0-2/input1"
UNIQ=""
PROP=0
EV=13
KEY=380000c000 1e000000000000 0
MSC=10
MODALIAS=input:b0003v2345p0101e0111-e0,1,4,k71,72,73,74,8E,8F,A3,A4,A5,ram4,lsfw
SEQNUM=1855

UDEV  [1306907979.384031] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/input/input20/event20 (input)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.1/input/input20/event20
SUBSYSTEM=input
DEVNAME=/dev/input/event20
SEQNUM=1856
ID_INPUT=1
ID_INPUT_KEY=1
ID_VENDOR=Zowie
ID_VENDOR_ENC=Zowie
ID_VENDOR_ID=2345
ID_MODEL=Zowie঵閶脂镢
ID_MODEL_ENC=Zowie঵閶脂镢
ID_MODEL_ID=0101
ID_REVISION=0001
ID_SERIAL=Zowie_Zowie঵閶脂镢
ID_TYPE=hid
ID_BUS=usb
ID_USB_INTERFACES=:030101:030000:
ID_USB_INTERFACE_NUM=01
ID_USB_DRIVER=usbhid
ID_PATH=pci-0000:00:1d.0-usb-0:2:1.1
MAJOR=13
MINOR=84
DEVLINKS=/dev/input/by-id/usb-Zowie_Zowie঵閶脂镢-event-if01 /dev/input/by-path/pci-0000:00:1d.0-usb-0:2:1.1-event

UDEV  [1306907979.387334] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input19 (input)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input19
SUBSYSTEM=input
PRODUCT=3/2345/101/111
NAME="Zowie Zowie঵閶脂镢"
PHYS="usb-0000:00:1d.0-2/input0"
UNIQ=""
PROP=0
EV=120013
KEY=1000000000007 ff9f207ac14057ff febeffdfffefffff fffffffffffffffe
MSC=10
LED=1f
MODALIAS=input:b0003v2345p0101e0111-e0,1,4,11,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8C,8E,96,98,9E,9F,A1,A3,A4,A5,A6,AD,B0,B1,B2,B3,B4,B7,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,F0,ram4,l0,1,2,3,4,sfw
SEQNUM=1850

UDEV  [1306907979.391434] add      /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input19/event19 (input)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.0/input/input19/event19
SUBSYSTEM=input
DEVNAME=/dev/input/event19
SEQNUM=1851
ID_INPUT=1
ID_INPUT_KEY=1
ID_INPUT_KEYBOARD=1
ID_VENDOR=Zowie
ID_VENDOR_ENC=Zowie
ID_VENDOR_ID=2345
ID_MODEL=Zowie঵閶脂镢
ID_MODEL_ENC=Zowie঵閶脂镢
ID_MODEL_ID=0101
ID_REVISION=0001
ID_SERIAL=Zowie_Zowie঵閶脂镢
ID_TYPE=hid
ID_BUS=usb
ID_USB_INTERFACES=:030101:030000:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usbhid
ID_PATH=pci-0000:00:1d.0-usb-0:2:1.0
MAJOR=13
MINOR=83
DEVLINKS=/dev/input/by-id/usb-Zowie_Zowie঵閶脂镢-event-kbd /dev/input/by-path/pci-0000:00:1d.0-usb-0:2:1.0-event-kbd