{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfdc49e2626175b186012f2ffcf739e9fc0f414f03b21e93ad3e388d8326a4d79",
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    "signer": "0x0F14847C13192e78c728A5b359989b0870512CFE",
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  }
}