Execute
```
$ curl http://$PHABRICATOR_HOST/api/maniphest.search -d api.token=$CONDUIT_TOKEN -d constraints[modifiedEnd]=$(date +%s) -d limit=1
```
Do not get error `Error while reading "modifiedEnd": Expected epoch timestamp as integer, got something else.`.
Execute
```
$ curl http://$PHABRICATOR_HOST/api/maniphest.search -d api.token=$CONDUIT_TOKEN -d constraints[modifiedEnd]=99999999999999999999999 -d limit=1
```
Get error `Error while reading "modifiedEnd": Epoch timestamp integer overflow.`