How to mock complex production like backend?

[razb-viola]

Lets say that you want to develop a complex SaaS CRM where many different companies can use.
Each company wants to allow its employees to login the system and assign them Roles and Permissions.
As a result, company A would have different data from company B.

In order to achieve the desired functionality, the flow is like that:

1. Create a Company.
2. Create Profiles.
3. Create Permissions and Roles.
4. Assign Roles to every Profile, which is an employee in a given Company.
5. Allow the employee login to his Profile and assign him with this Roles.
6. Allow the employee to manage resources.

There is bunch of stateful and related data here - you cannot allow the employee to create resources in the CRM before he has a Profile. You cannot create a Profile before you created a Role, etc.

In addition, after the user created a resource, the first thing he would do is to visit the page of the resource using the UI and perform actions against it.

How all of these can be achieved against a mock server?
Mock server won't save and respond with actual resources the employee created.