{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9d6d06db4ba328fa8fded65005f1ddf081a794924a3fc168a97a1514f914c7c6",
    "signature": "0x45e0ba8017d6a5c75706ec0322013f9d1b4f7515bcd2eb530d2bf981f48d619b4a5052cb4e25492bc970db840c2ba86d8c6f36f980e80090acf2b67fe3a1a65e1c",
    "signer": "0xea79EEd60D97517387a63Acc5fd3BeE2227F1658",
    "userId": "220230236"
  }
}