I need to send the following json body request in a http call

{
"variant": {
"id": 7702027632705,
"price": "2.70"
}
}

I keep getting the following error

the ninox code i have written is

{
variant: [{
id: 7702027632705
}, {
price: 2.7
}]
}

could anyone clarify the correct way to write this

Regards

Paul