Recovering date from cassandra sstable2json

Recovering date from cassandra sstable2json

I am trying to recover timestamp from a sstable2json dump of a cassandra
table for batch processing. The table schema looks something like this:
CREATE TABLE actions (
userid text,
action text,
ts timestamp,
PRIMARY KEY (userid, ts)
) WITH CLUSTERING ORDER BY (ts DESC);
The sstable2json dump of a particular user looks something like this:
{"key": "HEX_VALUE_OF_USERID","columns": [["2013-07-10
19\\:25\\:44+0000:","",1373484344552000], ["2013-07-10
19\\:44\\:11+0000:action","blog",1373484344552000]]},
When I look up the same user details in the database, with the datetime
("2013-07-10 19:25:44+0000") recovered from the dump, I find no matching
records. However, I can find the matching record by using a range query
with the recovered datetime (+/-1 sec). Is it possible to recover the
actual ts (I am guessing with milliseconds) in someway ?. The other
timestamps attached to the row are not consistent (can differ from the ts
by some milliseconds).