{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbdba6aace99ce45830e8214e92fab9a6f4f75be602ea0f0315a3cfe07712a173",
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    "signer": "0xbEf4D90F227E3dfCB9bD5f3f82a7A26B1D05b6f0",
    "userId": "468949245"
  }
}