{
  "manageEntity": {
    "action": "Save",
    "entityId": "1879308287",
    "entityType": "Track",
    "nonce": "0x041cd6f54c32254e1c6555c7297b8a654d7df5094a130de55b6ae9769514eafb",
    "signature": "0x44099bbd0beb5e983ca151a7571379695d2cd18dbe404524d224ed7821b84f2e7426d7c031181e2946a2c2ffa7ce70b7800e32558c0a4799f363fb24e8e3bd041c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}