{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbd81f0e833916e2c6545f33feb883218bcd9442b23d18394732b4635c3895f1e",
    "signature": "0xd8e9d44f5e10355b82f553c0974f90d42404e79c0149f5a43b8d98a7efedb1d84e3323d4625f668abc502eba129d2de73152ed2f412693f26c36d896b47444251c",
    "signer": "0x0A44a42c082f41293eDdE36f5e00db6D10B3dF2e",
    "userId": "569747820"
  }
}