Follow the filtering methods allowed on the API: https://account.assuresign.net/api/v3.7/documentation#/documentnow
expand GET /envelopes
Specify which "type" of DATE you're filtering on and then pass in the fromDate and optionally toDate. For dateFilter you can choose from ANY, CREATED, CLOSED, EXPIRED, COMPLETION, CANCELLED, DECLINED, STALED When I tried "ANY", the responses weren't exactly what I was expecting. Please test when using "ANY".
Filter by ID
We haven't tried it, but if you simply pass in the envelopeid as the filter itself, it may work. It may also be expecting an array called "envelopes", but when searching by ID the docs show it returns an object named "envelope" so we may have some work to do there. Please let us know if you test this.