{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x462fba35bb72c434f06b0cbfb6a8267c4d60dd732f7647ebcdd92f07269a284f",
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    "signer": "0x4c4e4BD78139bf2468BE325BEBef2683F240Afe5",
    "userId": "707163815"
  }
}