{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaea8cc306f1b9d5771c270360f0ae501f62b0c524ebe8fad043557d79509b713",
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    "signer": "0xeB434A92095290c9fdA908bfb04b42aB7E91b6b5",
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}