{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3e2968b9b1cf87188f79e2751c6d750dc032d648bb865391e932fa560991c7e4",
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    "signer": "0xd735d11B4b1d01322F82ab617a91cc8c0dCd66bB",
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  }
}