As for the dump output..
0.000 0 108 1103190407 N:H*i:sk:NNfNNNc
[snipped for brevity]
The fourth is the token itself. SA uses some "prefix" characters for encoding things, but without any prefix, a token is a word in the body of the message.
I think you meant the FIFTH column is the token itself, right?
-Joe K.
Agreed, I think the fourth field is the timestamp at which the token was last seen in a message, and the fifth field is the token. The timestamp's used for auto-expiry runs where tokens that haven't been seen in a while are removed from the db if other expiration requirements are met.