Objects like SM_OBJ_FirstNotifiedAt in Ionix display the internal Timestamp format in a format which is not easily readable. To "read" the time in human readable format, you can use the ASL time(timestamp) function to convert Timestamp to a human readable format. This could be done as follows:
START{
..eol }
do{
timestamp=1270115622;
print("Time".time(timestamp));
}