Sendgrid webhook event examples copied from https://sendgrid.com/docs/for-developers/tracking-events/event/ on 2020-12-04

sendgrid-events.json

[
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "processed",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "deferred",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "response": "400 try again later",
    "attempt": "5"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "delivered",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "response": "250 OK"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "open",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "useragent": "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
    "ip": "255.255.255.255"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "click",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "useragent": "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
    "ip": "255.255.255.255",
    "url": "http://www.sendgrid.com/"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "bounce",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "reason": "500 unknown recipient",
    "status": "5.0.0"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "dropped",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "reason": "Bounced Address",
    "status": "5.0.0"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "spamreport",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "unsubscribe",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id"
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "group_unsubscribe",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "useragent": "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
    "ip": "255.255.255.255",
    "url": "http://www.sendgrid.com/",
    "asm_group_id": 10
  },
  {
    "email": "example@test.com",
    "timestamp": 1513299569,
    "smtp-id": "<14c5d75ce93.dfd.64b469@ismtpd-555>",
    "event": "group_resubscribe",
    "category": "cat facts",
    "sg_event_id": "sg_event_id",
    "sg_message_id": "sg_message_id",
    "useragent": "Mozilla/4.0 (compatible; MSIE 6.1; Windows XP; .NET CLR 1.1.4322; .NET CLR 2.0.50727)",
    "ip": "000.000.000.000",
    "url": "http://www.sendgrid.com/",
    "asm_group_id": 10
  }
]

JSON object field reference https://sendgrid.com/docs/for-developers/tracking-events/event/#json-objects