{
  "manageEntity": {
    "action": "Save",
    "entityId": "484937344",
    "entityType": "Track",
    "nonce": "0x8c72ab02c84809681455eff0d2b4fe8322f345aa833a28dd5fa7d4f9d8c50d03",
    "signature": "0x06f15864b1e6e7078537468fb4f57ffb9b1509b29c72148ffff2c317c1b96cfc4d49444d829c3210dfc78d5a1938537a3b782adccc8478aabfe8afd87fdac63f1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}