{
  "manageEntity": {
    "action": "Save",
    "entityId": "1820107980",
    "entityType": "Track",
    "nonce": "0xa5dd9ffe9b9fc08dbe6b80cc5c64e53e4b4625aeaca65619c5fc252d8b923577",
    "signature": "0x1a3bd9b7df6edb43c4d3bdf01d849a9e6ade5902382d7adefde7784dd7eb368f25624f0450916c8f62490b5bcd652cf469560e75ebbae975c28f88d59ae8eab41c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}