{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x95ee1063921f255113704ef318127a6032f25fbd2860fd2bc147a0f7af149b43",
    "signature": "0x987b66b2fe7e8096a55480b764b3b498a043391b1d74cbd3e6bc1fb950d8b94f237db25622c5342e46b4e8572da7f45ee6d1ad96d0da7acd00f4618e554fad8f1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}