Get API users for a TMC

Retrieves the list of all active API users associated with the caller's TMC.

Use this endpoint to:

• Audit existing API users and their clientIds under a TMC.
• Look up the clientId for a specific API user before rotating its client secret or revoking access.

Notes:

• This endpoint supports pagination using limit and offset query parameters.
• The response includes only the clientId for each user. The clientSecret is never returned.
• Returns only the API users belonging to the caller's contracting TMC.
• Only a TMC admin can use this endpoint.