{
  "type": "object",
  "description": "A list membership record.",
  "name": "Membership",
  "properties": {
    "recordId": {
      "type": "string",
      "description": "The ID of the CRM record that is a member of the list."
    },
    "addedAt": {
      "type": "datetime",
      "description": "The date and time the record was added to the list."
    }
  },
  "$schema": "https://json-structure.org/draft/2020-12/schema"
}