{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf647550587a74a438a01a9cd305e602ae76f072a26fd2441ba4a6bec81ee6fae",
    "signature": "0xcbaf24af178568c2d6f656cd44056ebf4c5444a72f9fdd82b94b5f1c0883952a61d2fab0bb7c50ba73aa2af68ce7aa7f2cddb1fb92474318290fb9be6856df621b",
    "signer": "0x2F87B1486fdD89eA9502284F66715d3f10DF722C",
    "userId": "598394819"
  }
}