curl --request POST \
  --url https://api2.rhombussystems.com/api/integrations/serviceManagement/initiateEnvoyOAuth \
  --header 'Content-Type: application/json' \
  --header 'x-auth-apikey: <api-key>' \
  --header 'x-auth-scheme: <x-auth-scheme>' \
  --data '
{
  "param": "state_param",
  "requestUrl": "https://oauth.provider.com/auth",
  "rhombusOrgUserUuid": "<string>"
}
'

{
  "error": true,
  "errorMsg": "<string>",
  "redirectUrl": "https://oauth.provider.com/auth?client_id=123&redirect_uri=callback",
  "warningMsg": "<string>"
}