1 files changed, 24 insertions, 0 deletions
diff --git a/matrix-specification/Data/DeviceLists.php b/matrix-specification/Data/DeviceLists.php
new file mode 100644
index 0000000..33d9459
--- /dev/null
+++ b/matrix-specification/Data/DeviceLists.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Matrix\Data;
+
+class DeviceLists implements \JsonSerializable
+{
+  /**
+   * @param string[] $changed
+   * @param string[] $left
+   */
+  public function __construct(
+    private array $changed = [],
+    private array $left = [],
+  )
+  {}
+
+  public function jsonSerialize(): array
+  {
+    return [
+      "changed" => $this->events,
+      "left" => $this->events,
+    ];
+  }
+}