{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069152352",
    "entityType": "Track",
    "nonce": "0x8b792fe62949ed74b6870e940a96a03a1411a7a9c21b8b93f93c806dfd773ee8",
    "signature": "0x50a4e852eeadaadea56d2c7f5fc9d9eb9ee2f517a06948c161657b7418003ddb2a6adee4dd67e17229947340da7f4d20d767ddfa59b10363618fba41077d77001b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}