{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe206a5b25b76128cc75ca8e268fffe822fc88c8c116f37c1f1e0c8564de77286",
    "signature": "0x2ab6b4ebbe4a4428e5cea99fe47d7966d4be84ec16fec5cded81a09dfb7a501949215bb0238df0917aee812443a7ac3e0ad2903bb3812cacf563d62e67f0965b1b",
    "signer": "0xd22818b4dA76AA357660ea09F5F1Eb5a8bCD3780",
    "userId": "217926720"
  }
}