{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060375",
    "entityType": "Track",
    "nonce": "0xa7ec715f7a5561ed9b5b9688a4d265d2bc9cf7082bf734b8d1ab99838897a12d",
    "signature": "0xc86e63b14873ab6f02515394a39089d959fc98656e571a479219e446fd3139bc6e2723d76e3bda21ad4bc29fd01e4dcf742d59345fa14250d84a5b9e5ed4941d1c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}