{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "#/components/schemas/TrackCall", "title": "TrackCall", "type": "object", "required": [ "event" ], "description": "A track call records an action that a user performs.", "properties": { "userId": { "type": "string", "description": "Unique identifier for the user in your database." }, "anonymousId": { "type": "string", "description": "A pseudo-unique substitute for a user ID." }, "event": { "type": "string", "description": "Name of the action that a user has performed." }, "properties": { "type": "object", "description": "Free-form dictionary of properties of the event, like revenue or product details.", "additionalProperties": true }, "context": { "$ref": "#/components/schemas/Context" }, "integrations": { "$ref": "#/components/schemas/Integrations" }, "timestamp": { "type": "string", "format": "date-time", "description": "ISO 8601 date string when the message was originally sent." }, "messageId": { "type": "string", "description": "Unique identifier for the message to deduplicate." } } }