Hi

Actually the "\" is the escape character that allow us to use special resreved characters inside string .You are getting json with "\" these symbols so that compiler can add " character in the string otherwise it represent start of a new string or end of a string .So when you manipulate  this string and perform any functions on it whether using java script or jquery or C# these character will not be accountable and will not create problems.

So they will cause no any problem you can consider them as invisible.

Regards.