How to send a variable and its value (node ​​js) post request to the server?

Question

HTML

I can't figure out how to send the variable name and value to the server
Here is my code:

const data = JSON.stringify(
        receiver = 4100116212277840
    )
req.write(data)

I understand perfectly well that I am passing the receiver variable and at the same moment I am assigning a value to it and it turns out that I am only passing the value itself.
This is what the server finally receives:
statusCode: 201
{
"4100116212277840": "",
"id": 11
}
But I need such a request to the server:
{
"receiver ": "4100116212277840",
"id": 11
}

Answer 1

Try like this

const data = JSON.stringify({
    receiver: 4100116212277840
})