Weird JSON

That is sent from a mobile application to my rails application:

{"c2array":true,"size":[3,3,1],"data":[[[0],[1],[2]],[[1],[2],[3]],[[2],[3],[4]]]}

But for some reason I'm getting the request like this:

{

"{\"c2array\":true,\"size\":"=>

{"3,3,1"=>

{",\"data\":"=>

{"0"=>

    {","=>

      {"1"=>

        {","=>

          {"2"=>

            {","=>

              {"1"=>

               {","=>

                  {"2"=>

                    {","=>

                      {"3"=>

                        {","=>

                          {"2"=>

                            {","=>

                             {"3"=>

                                {","=>{"4"=>{"}"=>nil}}}}}}}}}}}}}}}}}}}},

"action"=>"create",

"controller"=>"maps"

}

I need to save it in my database, but I honestly do not know why that json is deformed in this way or how I can treat it for what I need.

Note: Both params 'action' and 'controller' are part of my framework so the problem is just the way my json arrives.

I just realized that i'm receiving the json like this because is getting taken as the params name, if there is a way to include the ajax post's data into a variable name maybe that will solve my problem.

Is like i was sending

"{"c2array":true,"size":[3,3,1],"data":[[[0],[1],[2]],[[1],[2],[3]],[[2],[3],[4]]]}" => nothing

instead

"data" => {"c2array":true,"size":[3,3,1],"data":[[[0],[1],[2]],[[1],[2],[3]],[[2],[3],[4]]]}

You know what I mean?