monitor: Decode ATT Signed Write Command
monitor: Decode ATT Signed Write Command

Signed Write Command data is as follow:
Attribute Handle (2 octets)
Data (0 or more octets)
Signature (12 octets).

> ACL Data RX: Handle 64 flags 0x02 dlen 20
      ATT: Signed Write Command (0xd2) len 15
        Handle: 0x001f
          Data: 00
          Signature: 00000000df559de6549e1757

pkarasev3/bluez,ComputeCycles/bluez,silent-snowman/bluez,mapfau/bluez,ComputeCycles/bluez,mapfau/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,ComputeCycles/bluez,pkarasev3/bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,pkarasev3/bluez,mapfau/bluez,pkarasev3/bluez,mapfau/bluez,pstglia/external-bluetooth-bluez