{
  "manageEntity": {
    "action": "Save",
    "entityId": "1396075755",
    "entityType": "Track",
    "nonce": "0x3a76f6667fef24a93a56a7f6272dbe709062d44f403ceede1874800bfbcdd59d",
    "signature": "0x5cd209dd54a3bc899ec1873427c5b6d3e064b3c0aa57d53f6058ef86baae82dc6f6e1deda3487dab35e9ff3c8b20cde4d7a7faf2d7f7fdabb51fcfa0ae08e24a1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}