Example config.json
{
"credentials": {
"project_id": 123,
"secret": "my_secret",
"username": "my_service_account"
},
"start_date": "2025-06-30T21:00:00Z",
"region": "US" #aside: this appears to be required, despite what https://docs.airbyte.com/integrations/sources/mixpanel suggests