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

UDEV  [2284.615232] add      /devices/pci0000:00/0000:00:14.0/usb3/3-7 (usb)
ACTION=add
BUSNUM=003
COLORD_DEVICE=1
COLORD_KIND=camera
DEVNAME=/dev/bus/usb/003/005
DEVNUM=005
DEVPATH=/devices/pci0000:00/0000:00:14.0/usb3/3-7
DEVTYPE=usb_device
DRIVER=usb
GPHOTO2_DRIVER=PTP
ID_BUS=usb
ID_FOR_SEAT=usb-pci-0000_00_14_0-usb-0_7
ID_GPHOTO2=1
ID_MODEL=USB_PTP_Camera
ID_MODEL_ENC=USB\x20PTP\x20Camera
ID_MODEL_ID=0271
ID_PATH=pci-0000:00:14.0-usb-0:7
ID_PATH_TAG=pci-0000_00_14_0-usb-0_7
ID_REVISION=0103
ID_SERIAL=04cb_USB_PTP_Camera_593135333733120307FF33301241A2
ID_SERIAL_SHORT=593135333733120307FF33301241A2
ID_USB_INTERFACES=:060101:
ID_VENDOR=04cb
ID_VENDOR_ENC=04cb
ID_VENDOR_FROM_DATABASE=Fuji Photo Film Co., Ltd
ID_VENDOR_ID=04cb
MAJOR=189
MINOR=260
PRODUCT=4cb/271/103
SEQNUM=3155
SUBSYSTEM=usb
TAGS=:uaccess:seat:
TYPE=0/0/0
USEC_INITIALIZED=2284615040

UDEV  [2284.615943] add      /devices/pci0000:00/0000:00:14.0/usb3/3-7/3-7:1.0 (usb)
.MM_USBIFNUM=00
ACTION=add
COLORD_DEVICE=1
COLORD_KIND=camera
DEVPATH=/devices/pci0000:00/0000:00:14.0/usb3/3-7/3-7:1.0
DEVTYPE=usb_interface
GPHOTO2_DRIVER=PTP
ID_GPHOTO2=1
ID_VENDOR_FROM_DATABASE=Fuji Photo Film Co., Ltd
INTERFACE=6/1/1
MODALIAS=usb:v04CBp0271d0103dc00dsc00dp00ic06isc01ip01in00
PRODUCT=4cb/271/103
SEQNUM=3156
SUBSYSTEM=usb
TYPE=0/0/0
USEC_INITIALIZED=2284615852

UDEV  [2285.175567] add      /devices/parport0/ppdev0.0 (parport)
ACTION=add
DEVPATH=/devices/parport0/ppdev0.0
SEQNUM=3157
SUBSYSTEM=parport
USEC_INITIALIZED=2285175502

UDEV  [2285.175784] remove   /devices/parport0/ppdev0.0 (parport)
ACTION=remove
DEVPATH=/devices/parport0/ppdev0.0
SEQNUM=3158
SUBSYSTEM=parport
USEC_INITIALIZED=2285175165

UDEV  [2289.490637] add      /devices/parport0/ppdev0.0 (parport)
ACTION=add
DEVPATH=/devices/parport0/ppdev0.0
DRIVER=ppdev
SEQNUM=3159
SUBSYSTEM=parport
USEC_INITIALIZED=2289490583

UDEV  [2289.537020] remove   /devices/parport0/ppdev0.0 (parport)
ACTION=remove
DEVPATH=/devices/parport0/ppdev0.0
SEQNUM=3160
SUBSYSTEM=parport
USEC_INITIALIZED=2289536193