{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x33551f333164e20b4c16375cdd285bad8c2807d7c61061280ae1f2d546ed7435",
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    "signer": "0x8A4812fE7411C70706edC285a86d4AD5907cCF91",
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  }
}