{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/metadata",
  "title": "Metadata",
  "type": "object",
  "description": "The audit metadata. Captures all invoicing actions on create, send, update, and cancel.",
  "allOf": [
    {
      "$ref": "#/components/schemas/template_metadata"
    },
    {
      "properties": {
        "cancel_time": {
          "$ref": "#/components/schemas/date_time",
          "description": "The date and time when the resource was canceled, in [Internet date and time format](https://tools.ietf.org/html/rfc3339#section-5.6).",
          "readOnly": true
        },
        "cancelled_by": {
          "type": "string",
          "description": "The actor who canceled the resource.",
          "readOnly": true
        },
        "first_sent_time": {
          "$ref": "#/components/schemas/date_time",
          "description": "The date and time when the resource was first sent, in [Internet date and time format](https://tools.ietf.org/html/rfc3339#section-5.6).",
          "readOnly": true
        },
        "last_sent_time": {
          "$ref": "#/components/schemas/date_time",
          "description": "The date and time when the resource was last sent, in [Internet date and time format](https://tools.ietf.org/html/rfc3339#section-5.6).",
          "readOnly": true
        },
        "last_sent_by": {
          "type": "string",
          "description": "The email address of the account that last sent the resource.",
          "readOnly": true
        },
        "created_by_flow": {
          "description": "The flow variation that created this invoice.",
          "$ref": "#/components/schemas/invoice_creation_flow",
          "readOnly": true
        },
        "recipient_view_url": {
          "type": "string",
          "readOnly": true,
          "format": "uri",
          "description": "The URL for the invoice payer view hosted on paypal.com."
        },
        "invoicer_view_url": {
          "type": "string",
          "readOnly": true,
          "format": "uri",
          "description": "The URL for the invoice merchant view hosted on paypal.com."
        }
      }
    }
  ]
}