How to verify the signature parameters of webhook?

{
"remote-host": "52.200.151.182",
"content-length": "2581",
"x-forwarded-for": "52.200.151.182",
"accept": "/",
"x-newrelic-id": "UAEPUVJUGwIFVlFSAAMH",
"x-real-ip": "52.200.151.182",
"host": "testmxncredit.2222.com",
"digest": "",
"connection": "close",
"content-type": "application/json",
"x-newrelic-transaction": "PxQGBFRbWQIHAFcEBAQFUVVSFB8EBw8RVU4aU10KDFMCUl1XV1IGUFMHVENKQQFVA1FWUQAIFTs=",
"accept-encoding": "gzip;q=1.0,deflate;q=0.6,identity;q=0.3",
"user-agent": "Conekta Webhook Notifier"
}