{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4daec139a83ae84413b97501165ea7e1f190bc4f143dda28f05e0b1b1adfe2c7",
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    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
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  }
}