The Catenda platform supports two different types of user management. The first is the traditional user management where users create their own accounts within the Catenda platform. The second is the 

System for Cross-domain Identity Management (SCIM) API

 which allows organizations to manage users across multiple domains that they own.

Domains must all be owned by the organization to be able to manage users across them.
Please contact 

The SCIM specification is an HTTP-based protocol that makes managing identities in multi-domain scenarios easier to support via a standardized service. See 

To access the SCIM API you will need to authenticate using the client credentials flow as an organization.

If you do not have an organization please 

Organization API

SCIM

List organizations

Catenda API Documentation

Get organization

Update organization

Organization

List members

Add member

Get member