curl --request POST \
  --url https://api.projectcor.com/v1/oauth/refreshtoken \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data 'refresh_token=<string>'

{
  "access_token": "<string>",
  "token_type": "<string>",
  "expires_in": 123,
  "refresh_token": "<string>"
}