Unable to get oauth_token and oauth_token_secret

[AppConnect]

Hi Team,

To get the request-token we are creating request as below and running it using Postman client:

URL: https://{host_name}/plugins/servlet/oauth/request-token
Method: GET
Request body:
{
 "oauth": {
 "consumer_key": "consumer_key_value",
 "consumer_secret": "consumer_secret_private_key"
 }
}

Request is getting completed successfully with status code 200.
However, we are not getting oauth_token and oauth_token_secret in response. Getting empty response for the request.

Could you please help to let us know how to get oauth_token and oauth_token_secret?

Thank you.