{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x846833fb32a32572fef9a6433d4d6527d314dcdb0fad2129819668e5398bb2b0",
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    "signer": "0xaFC9fCe85449437CB3e6DEe6e0121e6B288b9019",
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  }
}