Need depth for [Comment:entity]

Problem/Motivation

I need to get entity data from comment using token.

However, the token from comment to the entity is [comment:entity], no drill down after that. I can get [comment:entity:title] and [comment:entity:url], but I need the entity's nid, like [comment:entity:nid], nothing coming out. I also tried [comment_entity:taget_id], no value.

I'd appreciate any advice and help!