{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5259944d05104df3e24e40171595976a754c521eec02e8ed8faf5e996f7083f0",
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    "signer": "0x5Bb892563c99309Bc7dA12601000720C867c77bD",
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  }
}