{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x806a8e3c3fa992dfc843a372890f43e3ccc9795f9fef045b02362bc5398a9bce",
    "signature": "0xae36c60f8c0589e928a63772ded11ab0ff34b3799192e12c3bc1ea5c19327020500c7c50e5a28a7955c40d694e031a606a9d68c880f86db30d802eab72c804cc1c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}