Get administrator details by ID.

Returns administrator information including organizational context (if applicable), role, and optionally permissions.

Admin types:
adminType holds the type of the administrator. The organization is also identified by which optional ID field is present:

• partnerId - Admin belongs to a partner organization
• subOperatorId - Admin belongs to a sub-operator organization
• installationAndMaintenanceCompanyId - Admin belongs to an I&M company
• None of the above - Operator-level administrator

SSO field:
The externalSsoId field is present when the administrator has SSO authentication enabled.

Permissions include:
Use ?include[]=permissions to include the administrator's permissions in the response.

For a partner or sub-operator API token, this endpoint returns 404 Not Found if the requested resource or its parent is outside the token's scope. If the target is visible to the token but the token lacks the required read permission, it returns 403 Forbidden.