@SebastianAT You can try like this:
or
Set the log levels as:
<logger name="org.camunda.bpm.engine.cmd" level="debug" />
<logger name="org.camunda.bpm.engine.impl.persistence.entity" level="debug" />
<logger name="org.camunda.bpm.engine.impl.history.event" level="debug" />
<logger name="org.camunda.bpm.engine.impl.batch.history" level="debug" />
<logger name="org.camunda.bpm.engine.impl.batch" level="debug" />