import { ManagementClient } from "auth0";

async function main() {
    const client = new ManagementClient({
        token: "<token>",
    });
    await client.organizations.invitations.get("id", "invitation_id", {
        fields: "fields",
        includeFields: true,
    });
}
main();

{
  "id": "uinv_0000000000000001",
  "organization_id": "<string>",
  "inviter": {
    "name": "Jane Doe"
  },
  "invitee": {
    "email": "john.doe@gmail.com"
  },
  "invitation_url": "https://mycompany.org/login?invitation=f81dWWYW6gzGGicxT8Ha0txBkGNcAcYr&organization=org_0000000000000001&organization_name=acme",
  "created_at": "2020-08-20T19:10:06.299Z",
  "expires_at": "2020-08-27T19:10:06.299Z",
  "client_id": "AaiyAPdpYdesoKnqjj8HJqRn4T5titww",
  "connection_id": "con_0000000000000001",
  "app_metadata": {},
  "user_metadata": {},
  "roles": [
    "<string>"
  ],
  "ticket_id": "<string>"
}