Interface representing a message that targets a Firebase Installation ID (FID).

**Signature:**

    export interface FidMessage extends BaseMessage

**Extends:** [BaseMessage](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.basemessage#basemessage_interface)

## Properties

| Property | Type | Description |
|---|---|---|
| [fid](https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.fidmessage#fidmessagefid) | string | The Firebase Installation ID (FID) to which the message should be sent. |

## FidMessage.fid

The Firebase Installation ID (FID) to which the message should be sent.

**Signature:**

    fid: string;