{
  "manageEntity": {
    "action": "Save",
    "entityId": "1314320381",
    "entityType": "Track",
    "nonce": "0x214b6563fb5198e5d2cdd4845bb02dfa26630e33d2c0917a75f453d266418f00",
    "signature": "0xf3696e8b1478be4308d0ba80ca77c0b21749335b899dddf70f985a70bbd6436d0db1aa00120109115160549d10bc4cca2b01b704fe27af42452ad88885a8329e1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}