DocumentMessageReceivedWebhookPayload

{
    "type": "message.received",
    "messageId": "string",
    "instanceId": "string",
    "externalId": "string",
    "remoteJid": "string",
    "receivedAt": "string",
    "fromMe": true,
    "messageType": "TEXT",
    "mediaUrl": "string",
    "content": {
        "fileName": "contrato.pdf",
        "caption": "segue contrato",
        "pageCount": 3,
        "fileLength": 204800,
        "document": {
            "directPath": "/v/t62.7119-24/...",
            "mediaKey": "base64-media-key",
            "url": "https://mmg.whatsapp.net/...",
            "mimeType": "application/pdf"
        }
    },
    "senderName": "string",
    "broadcast": true,
    "isGroup": true,
    "connectedPhone": "string",
    "phone": "string",
    "status": "string"
}