Hello @milan.milanov ,
please have a look at External Tasks, it looks like this could be what you are looking for.
https://docs.camunda.org/manual/7.15/reference/bpmn20/tasks/service-task/#external-tasks
They behave similar to User Tasks but they are inteded to be handled by Machines, so called External Task Workers. There are some Client Implementations just to give you an idea:
https://docs.camunda.org/manual/7.15/user-guide/ext-client/
I hope this helps
Jonathan