{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcc96af409a2b92ca74330c9edf04f68f14182ad6d6ee228edb192f0a4590542f",
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    "signer": "0x213697efF59e0eb4ce75257956a4F693e56C9E3d",
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}