curl --request POST \
  --url https://api.nova-cloud.ai/auth/refresh \
  --header 'Content-Type: application/json' \
  --data '
{
  "refresh_token": "<string>"
}
'

{
  "access_token": "<string>",
  "refresh_token": "<string>",
  "token_type": "bearer",
  "expires_in": 3600
}