gitlab-org--gitlab-foss/app/assets/javascripts/sidebar/queries/issue_subscribed.query.graphql

query issueSubscribed($fullPath: ID!, $iid: String) {
  workspace: project(fullPath: $fullPath) {
    id
    issuable: issue(iid: $iid) {
      id
      subscribed
      emailsDisabled
    }
  }
}