HTTP Status 200 - OK

GET /api/users/123 HTTP/1.1

HTTP/1.1 200 OK
Content-Type: application/json
ETag: "33a64df551425fcc55e"
Cache-Control: max-age=3600

{"id": 123, "username": "alice", "email": "alice@example.com"}

POST /api/orders HTTP/1.1
Content-Type: application/json

{"product_id": 42, "quantity": 2}

HTTP/1.1 200 OK
Content-Type: application/json

{"order_id": 789, "status": "confirmed", "total": 199.98}

PUT /api/users/123 HTTP/1.1
Content-Type: application/json

{"email": "newemail@example.com"}

HTTP/1.1 200 OK
Content-Type: application/json

{"id": 123, "username": "alice", "email": "newemail@example.com", "updated_at": "2025-10-01T14:30:00Z"}