{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029774119",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0b5b5c7e6f850daba8bde315a3ebe36eabd7784f58f93774fa7cf732014dd741",
    "signature": "0xb95c00a4c92cf114f08edcce4db8cb0a320472dddd9e745046f7117d6c9d6a560282364c6ae21fcd6ba7e398b7950a76ce1456c0cff4df0ab073471bd3946f2f1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}