Read the error message: it's pretty explicit.
Your JSON does not match the class you are trying to deserialize into.
So use the debugger to look at exactly what the JSON in
contains, and if necessary use an online class constructor ( I use Convert JSON to C# Classes Online - Json2CSharp Toolkit
] myself) to construct the classes in the data, then compare them to the
class you are expecting.
Sorry, but we can't do any of that for you!