Error during creating Linode instance from the api

Hello i need a quick support, As i am trying to create a linode instance from the api (POST https://api.linode.com/v4/instances) and here are my parameters ({image: "linode/ubuntu18.04",type: "g6-standard-2",region: "us-east"}) and i setting my personal access token in the autorization Bearer and i geeting this error {
"errors": [
{
"reason": "Not found"
}
]
}

Please Help!