mutation InstallProjectWebhook {
  installProjectWebhook(
    input: {
      projectId: "…"
      notificationUrl: "…"
      name: "…"
    }
  ) {
    __typename
    webhook {
      __typename
      name
      id
      createdAt
      notificationUrl
      secret
      creator {
        __typename
        name
        id
      }
      ... on ProjectWebhook {
        version
      }
    }
  }
}