Nylas message.opened.legacy notification object

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/nylas/refs/heads/main/json-schema/nylas-message-opened-legacy.schema.json",
  "title": "Nylas message.opened.legacy notification object",
  "description": "Legacy format for message opened tracking notifications. This schema describes `data.object` inside the Nylas notification envelope.",
  "type": "object",
  "properties": {
    "grant_id": {
      "type": "string",
      "description": "The v3 grant ID."
    },
    "object": {
      "type": "string",
      "description": "Always `message`.",
      "enum": [
        "message"
      ]
    },
    "deltas": {
      "type": "array",
      "description": "Array of delta change objects in v2 format.",
      "items": {
        "type": "object",
        "properties": {
          "date": {
            "type": "integer",
            "description": "Unix timestamp of the open event."
          },
          "object": {
            "type": "string",
            "description": "Always `metadata`."
          },
          "type": {
            "type": "string",
            "description": "The delta type, always `message.opened`."
          },
          "object_data": {
            "type": "object",
            "description": "The v2-format tracking data.",
            "properties": {
              "account_id": {
                "type": "string",
                "description": "The v2 account ID."
              },
              "id": {
                "type": "string",
                "description": "The v2 webhook ID."
              },
              "namespace_id": {
                "type": "string",
                "description": "The v2 namespace ID."
              },
              "object": {
                "type": "string",
                "description": "Always `metadata`."
              },
              "attributes": {
                "description": "Legacy attributes field. Always `null`.",
                "nullable": true
              },
              "metadata": {
                "type": "object",
                "description": "Tracking metadata including open count and recents.",
                "properties": {
                  "count": {
                    "type": "integer",
                    "description": "Total number of opens."
                  },
                  "message_id": {
                    "type": "string",
                    "description": "The v2 message ID."
                  },
                  "payload": {
                    "type": "string",
                    "description": "Custom payload set when creating the tracking pixel."
                  },
                  "recents": {
                    "type": "array",
                    "description": "Recent open events.",
                    "items": {
                      "type": "object",
                      "properties": {
                        "id": {
                          "type": "integer",
                          "description": "Sequential open ID."
                        },
                        "ip": {
                          "type": "string",
                          "description": "IP address of the opener."
                        },
                        "timestamp": {
                          "type": "integer",
                          "description": "Unix timestamp of the open."
                        },
                        "user_agent": {
                          "type": "string",
                          "description": "User-Agent string."
                        }
                      }
                    }
                  },
                  "timestamp": {
                    "type": "integer",
                    "description": "Unix timestamp of the first open."
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "required": [
    "grant_id",
    "object",
    "deltas"
  ],
  "x-nylas-trigger": "message.opened.legacy",
  "x-nylas-category": "Message Tracking",
  "x-provenance": {
    "method": "authored",
    "publisher": "Nylas",
    "source": "https://developer.nylas.com/docs/reference/notifications/message-tracking/message-opened-legacy/",
    "derived_from": "nylas/developer.nylas.com@a7995fb6:src/_component-data/notification-schemas.json",
    "generated": "2026-09-28"
  },
  "examples": [
    {
      "deltas": [
        {
          "date": 1733261154,
          "object": "metadata",
          "object_data": {
            "account_id": "<V2_NYLAS_ACCOUNT_ID>",
            "id": "<V2_WEBHOOK_ID>",
            "metadata": {
              "count": 1,
              "message_id": "<V2_MESSAGE_ID>",
              "payload": "Hello world",
              "recents": [
                {
                  "id": 0,
                  "ip": "ip_address",
                  "timestamp": 1733163186,
                  "user_agent": "Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko Firefox/11.0 (via ggpht.com GoogleImageProxy)"
                }
              ],
              "timestamp": 1733261154
            },
            "namespace_id": "<V2_NAMESPACE_ID>",
            "object": "metadata"
          },
          "type": "message.opened"
        }
      ],
      "grant_id": "<V3_NYLAS_GRANT_ID>",
      "object": "message"
    }
  ]
}