Bulk add subscribers to forms Response

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/convertkit/main/json-schema/bulk_add_subscribers_to_forms_response.json",
  "title": "Bulk add subscribers to forms Response",
  "x-tag": "Forms",
  "type": "object",
  "properties": {
    "subscribers": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "integer"
          },
          "first_name": {
            "type": "string"
          },
          "email_address": {
            "type": "string"
          },
          "created_at": {
            "type": "string"
          },
          "added_at": {
            "type": "string"
          },
          "referrer": {
            "type": "string"
          },
          "referrer_utm_parameters": {
            "type": "object",
            "properties": {
              "source": {
                "type": "string"
              },
              "medium": {
                "type": "string"
              },
              "campaign": {
                "type": "string"
              },
              "term": {
                "type": "string"
              },
              "content": {
                "type": "string"
              }
            },
            "required": [
              "source",
              "medium",
              "campaign",
              "term",
              "content"
            ]
          }
        },
        "required": [
          "id",
          "first_name",
          "email_address",
          "created_at",
          "added_at",
          "referrer",
          "referrer_utm_parameters"
        ]
      }
    },
    "failures": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "errors": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "subscription": {
            "type": "object",
            "properties": {
              "form_id": {
                "type": "integer",
                "nullable": true
              },
              "subscriber_id": {
                "nullable": true,
                "type": "integer"
              },
              "referrer": {
                "type": "string"
              }
            },
            "required": [
              "form_id",
              "subscriber_id",
              "referrer"
            ]
          }
        },
        "required": [
          "errors",
          "subscription"
        ]
      }
    }
  },
  "required": [
    "subscribers",
    "failures"
  ]
}