{
  "manageEntity": {
    "action": "Save",
    "entityId": "233572",
    "entityType": "Track",
    "nonce": "0xafffd1767c92655b606b6520784eb0a16e2be8049fc3c381b0b539e890d33a79",
    "signature": "0x2cdd765dc4efbcb2650552d9ba40907e89b6fe1ac3786324d193ed37949e9d1a7ff7d4d54fd11ee33474a9612fbf60862437fe18d2ee4eed6c66bd99c45e501b1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}