JsonException missing required properties when they are there

"contact_inbox": {
  "id": 4,
  "contact_id": 4,
  "inbox_id": 1,
  "source_id": "f7b6c095-1356-47dd-b7ba-58cee0531175",
  "created_at": "2023-11-27T14:04:07.619Z",
  "updated_at": "2023-11-27T14:04:07.619Z",
  "hmac_verified": false,
  "pubsub_token": "h18bNijnqfjVLtsTNd17hGPq"
}

public sealed record ContactInbox
{
    public required int Id { get; init; }
    public required int ContactId { get; init; }
    public required int InboxId { get; init; }
    public required string SourceId { get; init; }
    public required string CreatedAt { get; init; }
    public required string UpdatedAt { get; init; }
    public required bool HmacVerified { get; init; }
}