{
  "manageEntity": {
    "action": "Save",
    "entityId": "1062543",
    "entityType": "Track",
    "nonce": "0xe6452e85facd7c74f436646200cc0d48d1e98ea5864b2db15edb72aa43e9f3e5",
    "signature": "0xcf270725c4a031fa92c0edc1bc252a8d7824d2382d9b6e84a1b64a2ade20d315607a3852d8e77830c0e23ded59017929cb35b1568cdbc39d112050eb550c5ab11b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}