curl -X POST "http://localhost:5001/manager/login" \
  -H "Content-Type: application/json" \
  -d '{
    "username": "admin",
    "password": "your_password"
  }'

{
  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
  "expire": 3600,
  "user": {
    "username": "admin",
    "role": "administrator",
    "permissions": ["read", "write", "admin"]
  }
}