how to set the reporter using API REST for request in service desk

[Rosana Casilli]

Hi All! I have this situation. 

there is a third party that will integrate with our jira service desk by using api rest

the problem they have is that when they create the request, they are created with the user name of the jira admin with the api token. 

Is there any possibility to add the reporter? should they be added as customers?

thanks in advance.

Ro