flight-support/subscription/subscriptionNewMessage

mutation {
  webhook {
    createSubscriptionWebhook(
      refreshToken: "YOUR_REFRESH_TOKEN"
      label: "Sample newMessage"
      subscription: "subscription newMessageTest($operatorId: OperatorId!, $oAuthClientId: OAuthClientId!) { integration { flightSupport { newMessage(operatorId: $operatorId,oAuthClientId: $oAuthClientId) { id flightNid oauthClientNid type createdBy createdAt content isRead } } } }"
      variables: "{\"operatorId\": \"OPR_ID\",\"oAuthClientId\": \"YOUR_OAUTH_CLIENT_ID\"}"
      webhookUrl: "https://YOUR_WEBHOOK_URL"
      includeAuthorizationHeader: true
    ) {
      ... on CreateSubscriptionWebhookViolationList {
        error: value {
          message
          path
          category
        }
      }
      ... on NonNullBooleanValue {
        success: value
      }
    }
  }
}