@interface Book : NSObject <AQSDictionarySerialization>

@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *authorName;
@property (nonatomic, copy) NSNumber *isPublished;

@end

@implementaion Book

+ (NSDictionary *)aqs_keyPathsByPropertyKey {
    return @{
        @"title": @"title",
        @"authorName": @"author_name",
        @"isPublished": @"is_published"
    };
}

@end

[[AQSDictionarySerializer serializer] applyPatchForObject:book withDictionary:@{
    @"title": @"Harry Potter",
    @"author_name": @"J. K. Rowling",
    @"is_published": @(NO)
}];