Why does Express JS change the name of an object's key?

Question

JavaScript

Hello. The question is the following, when sending POST data to the server on node js with a request, namely an object in which one of the values ​​is an array, but in request.body I get this object with a changed key only for the array: it was "tags" -> it became "tags []".
Send code:

$.ajax({
      type: "POST",
      url: "/admin/create",
      data: data,
      success: (response) => {
        console.log("success", response);
        if(response.success) {
          clearInputs();
          getAllProjects();
        }
      },
      error: (error) => {
        console.log("error", error);
      }
    });

Receipt code:

adminRouter.post("/create", projectController.create);

exports.create = function(request, response) {
  if(!request.body) return response.sendStatus(400);
  const { id, ...data } = request.body;
  console.log(request.body);
        response.send(data);
};

In the screenshot, the data that goes out and the data that comes in. Also in console.log on the server in request.body is the same.