{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd6f61437993fe4f7cb89a8a4925988b2383246873c846a79113da298df2cba29",
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    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
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  }
}