Regex Regular Expression needed - ECMAScript

I need a regular expression to get the contents of ID 319 which in the example below is 22

{"id":754,"content":null},{"id":812,"content":"2021-03-22T15:30:00.000+0000"},{"id":573,"content":null},{"id":319,"content":22},{"id":349,"content":null},{"id":609,"content":null},{"id":820,"content":null},{"id":852,"content":null},{"id":317,"content":null},{"id":345,"content":null},{"id":249,"content":"No"},{"id":622,"content":null},{"id":688,"content":null},