File upload url only

Hi, how can i get only url from file upload field, now it look like
{“79312639.jpg”:{“name”:”79312639.jpg”,”url”:”https://www.site.com/wp-content/uploads/thwcfe_uploads/bc9073ddc5f/79312639.jpg”,”file”:”/home/site/public_html/wp-content/uploads/thwcfe_uploads/bc9073ddc5f/79312639.jpg”,”type”:”image/jpeg”,”size”:138789}}
i need https://www.site.com/wp-content/uploads/thwcfe_uploads/bc9073ddc5f/79312639.jpg