facebook-messenger-api-types/src/components/payloads/MessagePayload.d.ts

Typescript types for the Facebook messenger platform API (https://developers.facebook.com/docs/messenger-platform/reference)

import {ReceivedPayloadBase} from './ReceivedPayloadBase';

export interface MessagePayload extends ReceivedPayloadBase {
  message: {
    mid: string;
    seq: string;
    text: string;
  };
}