post https://app.bitgo.com/api/v2/user/login
Creates a short-lived (1 hour) access token for use with the API. BitGo doesn't recommend using this endpoint for scripting. Instead, use the SDK or the web UI to create long-lived access tokens. However, short-lived access tokens are the only access tokens with the "user_manage" scope that enables you to programmatically add users to your enterprise using the Add User to Enterprise endpoint.