{
  "manageEntity": {
    "action": "Save",
    "entityId": "1683897137",
    "entityType": "Track",
    "nonce": "0xf0b382f5759f290cb7f55d87c92b91ae3163da92d38d1415c9ec61eca519cd2b",
    "signature": "0xc974423ab239a1d6675ea813e1b86cdc9fc68032f63b518ec584754126c06174571fe1fea96afaebb48b98f3a15b4e7206240e5ed69e67f4e3f6037a51f630981b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}