Retrieve channel endpoint by identifier

export interface Response {
  /**
   * The unique identifier of the channel endpoint.
   */
  identifier: string;
  /**
   * The channel type (email, sms, push, chat, etc.).
   */
  channel: ("in_app" | "email" | "sms" | "chat" | "push") | null;
  /**
   * The provider identifier (e.g., sendgrid, twilio, slack, etc.).
   */
  providerId:
    | (
        | "emailjs"
        | "mailgun"
        | "mailjet"
        | "mandrill"
        | "nodemailer"
        | "postmark"
        | "sendgrid"
        | "sendinblue"
        | "ses"
        | "netcore"
        | "infobip-email"
        | "resend"
        | "plunk"
        | "mailersend"
        | "mailtrap"
        | "clickatell"
        | "outlook365"
        | "novu-email"
        | "sparkpost"
        | "email-webhook"
        | "braze"
        | "nexmo"
        | "plivo"
        | "sms77"
        | "sms-central"
        | "sns"
        | "telnyx"
        | "twilio"
        | "gupshup"
        | "firetext"
        | "infobip-sms"
        | "burst-sms"
        | "bulk-sms"
        | "isend-sms"
        | "forty-six-elks"
        | "kannel"
        | "maqsam"
        | "termii"
        | "africas-talking"
        | "novu-sms"
        | "sendchamp"
        | "generic-sms"
        | "clicksend"
        | "bandwidth"
        | "messagebird"
        | "simpletexting"
        | "azure-sms"
        | "ring-central"
        | "brevo-sms"
        | "eazy-sms"
        | "mobishastra"
        | "afro-message"
        | "unifonic"
        | "smsmode"
        | "imedia"
        | "sinch"
        | "isendpro-sms"
        | "fcm"
        | "apns"
        | "expo"
        | "one-signal"
        | "pushpad"
        | "push-webhook"
        | "pusher-beams"
        | "appio"
        | "novu"
        | "slack"
        | "discord"
        | "msteams"
        | "mattermost"
        | "ryver"
        | "zulip"
        | "grafana-on-call"
        | "getstream"
        | "rocket-chat"
        | "whatsapp-business"
        | "chat-webhook"
        | "novu-slack"
      )
    | null;
  /**
   * The identifier of the integration to use for this channel endpoint.
   */
  integrationIdentifier: string | null;
  /**
   * The identifier of the channel connection used for this endpoint.
   */
  connectionIdentifier: string | null;
  /**
   * The subscriber ID to which the channel endpoint is linked
   */
  subscriberId: string | null;
  /**
   * The context of the channel connection
   *
   * @minItems 0
   */
  contextKeys: string[];
  /**
   * Type of channel endpoint
   */
  type: "slack_channel" | "slack_user" | "webhook" | "phone" | "ms_teams_channel" | "ms_teams_user";
  /**
   * Endpoint data specific to the channel type
   */
  endpoint: SlackChannelEndpointDto | SlackUserEndpointDto | WebhookEndpointDto | PhoneEndpointDto;
  /**
   * The timestamp indicating when the channel endpoint was created, in ISO 8601 format.
   */
  createdAt: string;
  /**
   * The timestamp indicating when the channel endpoint was last updated, in ISO 8601 format.
   */
  updatedAt: string;
}
export interface SlackChannelEndpointDto {
  /**
   * Slack channel ID
   */
  channelId: string;
}
export interface SlackUserEndpointDto {
  /**
   * Slack user ID
   */
  userId: string;
}
export interface WebhookEndpointDto {
  /**
   * Webhook URL
   */
  url: string;
  /**
   * Optional channel identifier
   */
  channel?: string;
}
export interface PhoneEndpointDto {
  /**
   * Phone number in E.164 format
   */
  phoneNumber: string;
}