{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x57d08e216e390c5c9850cdc68955afef091f8feb8d238eb4a720ac141cd24e95",
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    "signer": "0xd2DfaaCD109D946a818bE7a8E1848fcB8BBDf6c3",
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  }
}