Is there a possibility to reuse substate machines in other animator?

Hello everyone!

I have a character animator that consists of 2 main parts:

1)Susbstate machines that shared between different characters - like walking, running, jumping, etc

2)Custom interactions with character - like playing with him. Custom interactions are unique for every character and, for example, interaction has 3 clips for one char but 6 clips for another.

For now, I have unique animator for every character, but it is very hard to support.

Can I reuse part of animator(substate machine) in different animators?

P.S. Sorry for my English :)