{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032254268",
    "entityType": "Track",
    "nonce": "0x375701ba08a5472f4438dce28b66f3cf63e0c629b315635d6bcc05ba4768f79b",
    "signature": "0x31e5175ec88594b9b08b33f4f1ee6da98faf007887a3eff39512eb0e02dcfa160c35273e9f802d96e3ced7f4f3eb559500899991491dac6e48b9842db63712fc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}