{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x084fdd2518530e6ffa3de244ad1ce5f60ca66c114df5fd549750a686a6000b53",
    "signature": "0x2fa3d81cdcdee06e12ee3d9a7a43ce1b7856f01a2144d9c8de28b96af19bddf029dd8359af8224bc3662da2beb8d15f38f952acabbb0b129aff557ece02438b61c",
    "signer": "0x28B95af038ACb6815848Db6776e96EcF8F17a27d",
    "userId": "605775157"
  }
}