A map of headers that should be provided when uploading the attached file.
A pre-signed S3 URL that should be used for uploading the attached file.
The expiration time of the URL in ISO timestamp. It's specified in ISO 8601 format: yyyy-MM-ddThh:mm:ss.SSSZ. For example, 2019-11-08T02:41:28.172Z.
yyyy-MM-ddThh:mm:ss.SSSZ
2019-11-08T02:41:28.172Z