make a json file

Hello, I need to make a json file to manage some images. Essentially, I need to provide the actual key/value pair JSON attributes for a set of generated images that I need to store and organize. There will be 7 main attributes they will be categorized in and then about 100 different images will be subcategorized in those main attributes. Essentially, I need to provide the meta data so that I can organize the files like you see described here .So I need to provide a JSON with key value pair like {[login to view URL]: 'BLUE SUNGLASSES'} but filename should be exactly same then we can do it programmatically. For suppose in Sunglasses if there is image [login to view URL], [login to view URL], [login to view URL], [login to view URL] then you need to provide me what does it mean e.g. if [login to view URL] used for generate the image it means it's Blue Sunglasses for 2 it will be Black Sunglasses etc. [login to view URL] - If you open this chicken you can see that there is left side below chicken image their metadata so that way we can create any number of metadata and also you need to define the which metadata have which attributeType