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

UDEV  [1301173046.657141] change   /devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc (block)
UDEV_LOG=3
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc
SUBSYSTEM=block
DISK_MEDIA_CHANGE=1
DEVNAME=/dev/sdc
DEVTYPE=disk
SEQNUM=2041
ID_VENDOR=Generic-
ID_VENDOR_ENC=Generic-
ID_VENDOR_ID=0bda
ID_MODEL=Multi-Card
ID_MODEL_ENC=Multi-Card\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0158
ID_REVISION=1.00
ID_SERIAL=Generic-_Multi-Card_20071114173400000-0:0
ID_SERIAL_SHORT=20071114173400000
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0
ID_PART_TABLE_TYPE=dos
UDISKS_PRESENTATION_NOPOLICY=0
UDISKS_PARTITION_TABLE=1
UDISKS_PARTITION_TABLE_SCHEME=mbr
UDISKS_PARTITION_TABLE_COUNT=1
MAJOR=8
MINOR=32
DEVLINKS=/dev/disk/by-id/usb-Generic-_Multi-Card_20071114173400000-0:0 /dev/disk/by-path/pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0

UDEV  [1301173046.733643] change   /devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc (block)
UDEV_LOG=3
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc
SUBSYSTEM=block
DEVNAME=/dev/sdc
DEVTYPE=disk
SEQNUM=2042
ID_VENDOR=Generic-
ID_VENDOR_ENC=Generic-
ID_VENDOR_ID=0bda
ID_MODEL=Multi-Card
ID_MODEL_ENC=Multi-Card\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0158
ID_REVISION=1.00
ID_SERIAL=Generic-_Multi-Card_20071114173400000-0:0
ID_SERIAL_SHORT=20071114173400000
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0
ID_PART_TABLE_TYPE=dos
UDISKS_PRESENTATION_NOPOLICY=0
UDISKS_PARTITION_TABLE=1
UDISKS_PARTITION_TABLE_SCHEME=mbr
UDISKS_PARTITION_TABLE_COUNT=1
MAJOR=8
MINOR=32
DEVLINKS=/dev/disk/by-id/usb-Generic-_Multi-Card_20071114173400000-0:0 /dev/disk/by-path/pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0

UDEV  [1301173046.805691] add      /devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc/sdc1 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc/sdc1
SUBSYSTEM=block
DEVNAME=/dev/sdc1
DEVTYPE=partition
SEQNUM=2043
ID_VENDOR=Generic-
ID_VENDOR_ENC=Generic-
ID_VENDOR_ID=0bda
ID_MODEL=Multi-Card
ID_MODEL_ENC=Multi-Card\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0158
ID_REVISION=1.00
ID_SERIAL=Generic-_Multi-Card_20071114173400000-0:0
ID_SERIAL_SHORT=20071114173400000
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0
ID_PART_TABLE_TYPE=dos
ID_FS_UUID=9e16d5ce-154c-4f30-a494-0284f3ff65d6
ID_FS_UUID_ENC=9e16d5ce-154c-4f30-a494-0284f3ff65d6
ID_FS_VERSION=1.0
ID_FS_TYPE=ext4
ID_FS_USAGE=filesystem
UDISKS_PRESENTATION_NOPOLICY=0
UDISKS_PARTITION=1
UDISKS_PARTITION_SCHEME=mbr
UDISKS_PARTITION_NUMBER=1
UDISKS_PARTITION_TYPE=0x83
UDISKS_PARTITION_SIZE=16050536448
UDISKS_PARTITION_SLAVE=/sys/devices/pci0000:00/0000:00:16.2/usb3/3-2/3-2:1.0/host5/target5:0:0/5:0:0:0/block/sdc
UDISKS_PARTITION_OFFSET=16384
UDISKS_PARTITION_ALIGNMENT_OFFSET=0
MAJOR=8
MINOR=33
DEVLINKS=/dev/disk/by-id/usb-Generic-_Multi-Card_20071114173400000-0:0-part1 /dev/disk/by-path/pci-0000:00:16.2-usb-0:2:1.0-scsi-0:0:0:0-part1 /dev/disk/by-uuid/9e16d5ce-154c-4f30-a494-0284f3ff65d6