how to parse this type of json format in swift 4 with decodable? : {"type":"Success","message":"","fitting":{"fitterID":"96ba096c-f0aa-11e7-a67a-76478bc72e4d","fitID":"09d399c0-7d74-4578-a138-5f4b02ba2e80","leftNotesJSON":"[{\"class\":\"FitNote\",\"text\":\"Saddle Down\",\"leftfoot\":false},{\"class\":\"FitNote\",\"text\":\"Saddle Down\",\"leftfoot\":false},{\"class\":\"FootBottomNote\",\"leftfoot\":false}]","rightNotesJSON":"[{\"s3Bucket\":\"8190ba10-d310-11e3-9c1a-0800200c9a66\",\"angle\":0,\"leftfoot\":false,\"shoulderAngle\":0,\"hipAngle\":0,\"s3Key\":\"FD0F5AE6-8193-4980-AD11-C42FEF064B8B\",\"class\":\"AngleNote\",\"kneeAngle\":0}]"}}