Show sql statements from mysql binlog (GTID)
It seems that the option  --verbose must be added:

mysqlbinlog  --base64-output=AUTO --verbose mysql-bin.000005 


In the result you see:

### UPDATE `customer`
### WHERE
###   @1=388442
###   @2=382023
###   @3='2015:05:30'
###   @4='2015:06:02'
###   @5=3
###   @6=1
###   @7=0


@x are the table columns in their order