python boxsdk3 webhook.validate_message returns false

Hi, 

Can I see some of the code you are running? Also - the client id of your application would be helpful!

Sorry for the late response.

The code and id is below!!
is_valid in download_image_from_box() becomes False.
box_secret.json used in get_box_client() is configuration json.

image, box_file_id = download_image_from_box({"body": request.body, "headers": request.headers})

def download_image_from_box(event: dict) -> None:

    client, webhook_key, folderName = get_box_client()
    raw_body = event["body"]
    body = json.loads(raw_body)
    webhook_id = body["webhook"]["id"]

    webhook = client.webhook(webhook_id)
    is_valid = webhook.validate_message(raw_body, event["headers"], webhook_key)

def get_box_client():

    json_open = open('box_secret.json', 'r')
    secret = json.load(json_open)
    client_id = secret["boxAppSettings"]["clientID"]
    client_secret = secret["boxAppSettings"]["clientSecret"]
    jwt_key_id = secret["boxAppSettings"]["appAuth"]["publicKeyID"]
    rsa_private_key_data = secret["boxAppSettings"]["appAuth"]["privateKey"]
    rsa_private_key_passphrase = secret["boxAppSettings"]["appAuth"]["passphrase"]
    enterprise_id = secret["enterpriseID"]
    folderName = secret["folderName"]

    webhook_signature_key = secret["webhookPrimaryKey"]
    auth = JWTAuth(
        client_id=client_id,
        client_secret=client_secret,
        jwt_key_id=jwt_key_id,
        rsa_private_key_data=rsa_private_key_data,
        rsa_private_key_passphrase=rsa_private_key_passphrase,
        enterprise_id=enterprise_id
    )
    auth.authenticate_instance()

    client = Client(auth)
    return client, webhook_signature_key, folderName

$ box webhooks
----- Webhook 574783230 -----
ID: '574783230'
Type: webhook
Target:
    ID: '128629204110'
    Type: folder