{
  "manageEntity": {
    "action": "Save",
    "entityId": "1596426346",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x257c8a61f78dab35ba17b8b65400c796dddf090e69913f444cd52df5965d8353",
    "signature": "0xd7b0bd082bd031ed6a914229a2569312c1cd1e300e07fb7eb9f9955ee55dd46c272c6aae519f552e6a079d961e04b931a21e45ac728f5e85d53fe9d482c705961c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}