{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcc1dc97814287343aa2f0a39bcd09eb4f3b397bc1989403ebfd5a203e1093d3d",
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    "signer": "0x4Cf60d91ff1756027f501a348a1dc61dD85Da116",
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  }
}