All user tasks in Camunda 8 have the same task type - io.camunda.zeebe:userTask - so if you create a job worker that is listening for that type, it will trigger every time a task is created. However, it is triggered when the task is created, not when the task is assigned, so you need to ensure that the task is already assigned by your process.
Some users have done similar things if you search the forum. Here’s one thread related to this: Job worker for user task