{
  "manageEntity": {
    "action": "Save",
    "entityId": "1238086083",
    "entityType": "Track",
    "nonce": "0xb95c9b93cacbeb04f2f572ff9fa9124ef72bd4e49d3fa4efb07836c09d7cf81c",
    "signature": "0x99651a1b5a136e52a2a07369e078ccf01f7dc11236b0a8a3de7026fca48172e339f54f30090c5336f18acfadf1af1cba00fd08fe64f80aea3c20d038772a0ad01b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}