{
  "manageEntity": {
    "action": "Save",
    "entityId": "1354700511",
    "entityType": "Track",
    "nonce": "0xca8fbea03901a092a11d56e683984e3b9c18393688a6840c66a0bfebdfa853fe",
    "signature": "0x1f394e4f2f998b603f249daab848bdec403673566c80eaafe8f0eeba55d4db87659818c7a83189532ec4a61bc79927b547c37a6fba383a7e87ebe3b0eee1972f1b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}