Update a subscriber Response

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/convertkit/main/json-schema/update_a_subscriber_response.json",
  "title": "Update a subscriber Response",
  "x-tag": "Subscribers",
  "type": "object",
  "properties": {
    "subscriber": {
      "type": "object",
      "properties": {
        "id": {
          "type": "integer"
        },
        "first_name": {
          "type": "string",
          "nullable": true
        },
        "email_address": {
          "type": "string"
        },
        "state": {
          "type": "string",
          "enum": [
            "active",
            "cancelled",
            "bounced",
            "complained",
            "inactive"
          ]
        },
        "created_at": {
          "type": "string"
        },
        "fields": {
          "type": "object",
          "additionalProperties": {
            "type": "string"
          },
          "description": "Custom field values for the subscriber, keyed by the custom field's `key`."
        }
      },
      "required": [
        "id",
        "first_name",
        "email_address",
        "state",
        "created_at",
        "fields"
      ]
    },
    "warnings": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Present only when the request referenced custom field keys that don't exist on the account. Each entry names an unknown key that was ignored; the subscriber is still created or updated."
    }
  },
  "required": [
    "subscriber"
  ]
}