curl -X PUT 'https://api.example.com/users/user_jane' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
    "displayName": "Jane D.",
    "defaultTenantId": "tenant_globex"
  }'

{
  "id": "user_jane",
  "subjectId": "subject_jane",
  "kindeId": "kp_abc123",
  "email": "jane@acme.com",
  "displayName": "Jane D.",
  "defaultTenantId": "tenant_globex",
  "status": "active",
  "updatedAt": "2024-01-16T10:30:00Z"
}