{
  "client_id": "your_app_key",
  "client_secret": "your_app_secret",
  "grant_type": "client_credentials",
  "scope": "SMS",
  "code": "auth_code_abc123",
  "refresh_token": "f6e5d4c3b2a1f6e5d4c3b2a1f6e5d4c3"
}