Backbone saving model on server

Question

I am new to backbone. I am trying to save model on server but it gives me

error :

[HTTP/1.1 403 Forbidden 1010ms]

Where i am lacking?

My code is :

 <script type="text/javascript" >

    var UserModel = Backbone.Model.extend({
    url:'http://192.168.1.3:8080/app/profile/astro'
    });

    var user=new UserModel();
    console.log('here ');
    user.toJSON();
    user.save({
    'dob':'89 jan'

    },{
    wait:true,
    success:function(model, response) {
    console.log('Successfully saved!');
    },
    error: function(model, error) {
    console.log(model.toJSON());
    console.log('error.responseText');
    console.log(error);
    }
    }); 
    </script>



 Server code is:

@POST
@Path("/astro")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response addAstro(Astro astro)
{
ResponseBuilder builder = Response.status(Status.INTERNAL_SERVER_ERROR);
try
{
profileBusinessServiceImpl.saveAstro(astro, "52f5c59884aedfe7e051fd38");

builder.status(Status.OK);
}
catch (Exception e)
{

}
return builder.build();
}

I have tested my service with postman . And its working.