{
  "manageEntity": {
    "action": "Save",
    "entityId": "967218",
    "entityType": "Track",
    "nonce": "0xc3eaa335411af4eec01b420ade1bbb1a8f54ac97d3e208e9696114bc3b8f0bc3",
    "signature": "0xc2e457acff857a12c9a83edd8968ff4b40e4993fbae7943d33ef890b756620836f756b98515526c1bc1471c6d21ca55ba98b200e321fb323388f50ee378cf85b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}