Add a new customer to a project from the customer portal using JIRA REST API and Jira Automation?

[Sebastián Buzzurro]

Hello!

I'm thinking of creating a form in the customer portal so that customers users or agents can invite a new customer user to a project (after an approval), so:
How can I invite a new customer to a project from the customer portal using JIRA REST API and Jira Automation?

Thanks in advance!