{
  "manageEntity": {
    "action": "Save",
    "entityId": "281384585",
    "entityType": "Track",
    "nonce": "0x125a6b723ef35a14ee1171cf32c3ae2adfdbb6d9740beaa51d293b649ffdb248",
    "signature": "0x9b59f8dffdf92ff691b7630756adf11d734e28d6081de97eda508fcbbaa45cd866cf77deb2f96f9db5d637678dda134a0b3037fa0dfd4882af04f0f9e859d77d1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}