{
  "manageEntity": {
    "action": "Save",
    "entityId": "1324758369",
    "entityType": "Track",
    "nonce": "0xce7ac2b4dd2b025ceff74994543f60db4b84a24b8f2afdc12500c349bab210cd",
    "signature": "0x691f30850b7399cf3c7c285c9bc81daa547e098626d248e4f13adaee7b7606e662a25460ffdf39c150a26ca2d410ce21a3d346a8343a09f310cb2a66eb82e1161c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}