{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3211cfef12bd33da314f5d27f0ae74f34b0afeed9232e337062b16cada7ff8aa",
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    "signer": "0x8B4dA74eb8aCD12Fefb0F63f011537c562589a98",
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}