Add new property to Sendgrid contact list API

[Akanksha-Dhoot]

Hi Team,

We are using sendgrid contact lists in one application via sendgrid APIs, we want to know if there is a way where we can get last updated time of the list. Please note: we need it for list and not for individual contacts.

API: https://api.sendgrid.com/v3/mc/contacts/exports

Thanks, Akanksha