{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096098685",
    "entityType": "Track",
    "nonce": "0xb6afe6a389d8701d659b83758d2fa160f52846c5bec19990f7bedad13ea86e11",
    "signature": "0x382f442017ce483b9bbc7e3e94db39d4d703fe8a4759c32087d5cf9049152c28696f06bd6b5b7b52d3596ec31c27f8d1644cd7c122bd3052e0998586ede60cfb1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}