Topic version gives ability to read current version of uclient.
To get version string need to send word 'version' into /{HUB}/version topic
Example:
[1698837138] >48:3f:da:55:07:5b/version version
[1698837139] <48:3f:da:55:07:5b/version R231029;master;123c320d946ceeb854084f2ee1b9bf26a2b9cfad