{
  "manageEntity": {
    "action": "Save",
    "entityId": "1668144196",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xff5b7d7b43e15c46aa7241d4131711ea3ecadee806e215671b62a4450a489766",
    "signature": "0x02399a94539d80e12ccc986e67a87b4ed7bfacacf98d2493c0aa64d885270c923707437656084580110db45df0feb6f049e3d6086c3004a8d99f1048920b9cd61b",
    "signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
    "userId": "11153747"
  }
}