curl -X POST "https://panel.example.com/api/admin/users" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-d '{
"username": "john.doe",
"email": "[email protected]",
"password": "SecurePassword123!",
"language": "en",
"role": "user"
}'