{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5e1306ea4de02eda838500617198d06c0c5526d1d4f2ee6b8985301159ddc0d7",
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    "signer": "0x9e1FBf5911997bE49e57ed3C65D060D20f3841BA",
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}