Hey there!
I've never personally used Photon Bolt before, but Spine does have support out of the box for using Mecanim to drive underlying animations. So, depending on how Photon works, it may just require a little work to integrate.
I found this video, which shows how to manage a Spine rig with Mecanim: Unity spine import and mecanim - YouTube
In addition, this thread goes over the setup process as well: Mecanim FSM + Skeleton Animation Example
And this thread covers a bit as well: How to use the Animator/Mecanim with Spine
Let me know if you need any additional help!