{
  "manageEntity": {
    "action": "Save",
    "entityId": "1356013301",
    "entityType": "Track",
    "nonce": "0xee9bc3a61b04d830be95ba0796dc3a0fb4358a87cbe79d1b129095387a4dc004",
    "signature": "0x4f4aebdd8b40dac86abc6a6c58c77f5ac6b901275af5e94a966ea771ac98fc8269e7011659519bee42bdd3b56e936e8c621c959415278948cf1188cea3b8bcd61c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}