{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069350030",
    "entityType": "Track",
    "nonce": "0x885cadf19609187a9ea7b0cd5452223ff50856c8225c6958b6db3adf3e975459",
    "signature": "0xa171b039c69227554064fcd9ccb6bf14e70376727295d7ee6281332b71bdb9c7750fe60960473556af9b8dc010fb3c8b13177eb4c0359cf7381de1b7e188d4e01c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}