RESTful Java Web Services - Third Edition

Understanding the JSON Patch

JSON Patch is a format (identified by the media type, application/ json-patch+json) for expressing changes to a target JSON document intended for use with the HTTP PATCH method to apply partial modification of the target resource. JSON Patch operations are expressed in the JSON document, as follows:

Operation	JSON Patch document
Add: Used to add the <value> to the specified <location>.	{ op: add, path: <location>, value: <value> }
Remove: Used to remove the value at the specified <location>.	{ op: remove, path: <location>}
Replace:  Used to update the given <value> at the specified <location>.	{ op: replace, path: <location>, value: <value> }
Copy: Used to copy a value from the <from-location> ...