Currently, the REST API only allows me to create customer.
https://developer.atlassian.com/cloud/jira/service-desk/rest/#api-customer-post

However, i would like to know if there's a way I can update an existing customer using this API ? => change the name, etc.

And alors i want to create a new customer key/value for this user ? i can do that using the UI, but i need the feature in REST API.