Enter two values in a single key

I am trying to make a request to a server using PostMan, normally I have no problems using it, but sometimes it happens that in my code (JavaScript), I need to make a request which has an object in the body of this request and I do not know how to do it that PostMan accepts these types of values.

Let’s say that my code is something like this:

let objTract = {
        MethodName: 'sendAPI',
        params: {
            token: Bearer tokenCode

const response = await fetch("https://esliceu.codiblau.com/clashRoyale.php", {
    method: 'POST',
    body: JSON.stringify(objTract),
    headers: {
        "Content-Type": "application/x-www-form-urlencoded"

How would it be to make a request of this kind with PostMan? Thank you!!

You need to set up your request body:

Make sure you choose raw, and JSON from the drop down.