How do we compose a get url to get an envelope or envelopes that contain a given custom field. I tried to compose a get url as one shown below but not getting the desired results (i tried to follow the documentation here -> https://developers.docusign.com/esign-rest-api/reference/Envelopes/Envelopes/listStatusChanges but I think i am not passing the custom field to the query string correctly
https://demo.docusign.net/restapi/v2.1/accounts/ACCOUNT_ID_NUMBER/envelopes?from_date=2019-12-05&folder_types=sentitems&status=completed&custom_field=[SignerEmail=john.doe@email.com]