alias

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/customer-io/main/json-schema/customer-io-alias-schema.json",
  "title": "alias",
  "x-generated": "2026-10-12",
  "x-method": "derived",
  "x-generator": "derive-json-schema.py",
  "x-source": "openapi/customer-io-alias-api-openapi.yml#/components/schemas/alias",
  "x-scalar-ignore": true,
  "type": "object",
  "required": [
    "previousId",
    "userId"
  ],
  "properties": {
    "type": {
      "type": "string",
      "readOnly": true,
      "enum": [
        "alias"
      ],
      "description": "The event type. This is set automatically by the request method/endpoint."
    },
    "previousId": {
      "type": "string",
      "description": "The anonymousId or userId value that you want to merge into the canonical profile."
    },
    "userId": {
      "type": "string",
      "description": "The userId that you want to keep. This is required if you haven't already identified someone with one of our web or server-side libraries.\n"
    }
  }
}