{
  "manageEntity": {
    "action": "Save",
    "entityId": "1815334887",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3873416f5d50ba635643637c6f4eafdbafa904e3ae8f76332e508d6c76450f96",
    "signature": "0x9a58f0c43862fd61231b4b801eb489b401855180425c11c7e8f3ee2fbaf4ad3747c4038b0a4fae9c2f0faeba1819302ebdd065949ee4ccc9be6d7ffb1ec716451c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}