Echoes the JSON request body back verbatim.
{"message": "Hello REST Assured", "framework": "REST Assured"}
{"message": "Hello REST Assured", "framework": "REST Assured"}
Validates that JSON body contains non-empty name and email fields.
{"valid": true, "data": {"name": "Alice", "email": "alice@test.com"}}
{"valid": false, "errors": [
"Field 'name' is required and must not be empty",
"Field 'email' is required and must not be empty"
]}