Hi there, if it helps there's this Git repository which provides HTTP POST simulations of Location Scanning, WebHook Alerts and Splash Page (Captive Portal) Integrations. For your use case, the webhook alert simulator might help in simulating dummy logs of network alert data to use.
For example this is a sample webhook alert message-
Meraki Webhook Alert: {"version": "0.1", "sharedSecret": "xxxxx", "sentAt": "2022-02-08T10:31:24.229216", "organizationId": "1234567", "organizationName": "Simulated Organization", "organizationUrl": "https://n1.meraki.com/o//manage/organization/overview", "networkId": "L_12345678910", "networkName": "Simulated Network", "networkUrl": "https://n1.meraki.com//n//manage/nodes/list", "deviceSerial": "XXXX-XXXX-XXXX", "deviceMac": "00:00:00:aa:bb:cc", "deviceName": "Device Foo Bar", "deviceUrl": "https://n1.meraki.com//n//manage/nodes/new_list/000000000000", "alertId": "6212039510040053", "alertType": "Uplink status changed", "occurredAt": "2022-02-08T10:31:24.229233", "alertData": {"uplink": "0"}}...