{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136801744",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x841826f911a41e63688fcf7b3ecc2c20f0fe700435dfefb6596ec5cbb73df4fd",
    "signature": "0x224c5f44635acdfab081472ceccf0a4e41022959ebd907eed047fc99ab180bed09265615fecfd30227259b98e0cad4f30bced9181bf50f3bbc51cfc7aab815971c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}