{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006889949",
    "entityType": "Track",
    "nonce": "0x5b3ba061c6d6c80a568cdd5dc1e5b65f61ca87c24a38a3a5e8f22553c725800b",
    "signature": "0x7c3dbecb24f5f0eb8b1e3783f95a9d80d6aa97a8562261869bf0ca1eb747589e7b48d67ccb6635a7fbed4cbe71193e59c6d33d60aeb9ba6dc5f8b57a15bcc1da1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}