Hi @Alyson_Trad,
IdentityIQ is storing the date value as Unix epoch time in Milliseconds.
The timestamp 1519065955175 is the number of milliseconds from January 1, 1970, 00:00:00 UTC.
To convert the timestamp 1519065955175 to a human-readable date, you can use epoch converter Epoch converter.
Also you can use java code to convert.
long timestamp = 1519065955175L;
Date date = new Date(timestamp);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format(date);