{
  "manageEntity": {
    "action": "Save",
    "entityId": "823590044",
    "entityType": "Track",
    "nonce": "0x4c8cb239ddc4b4352db38c2e4170fad86c3c421ac1fa1b6ffd1f3437091ff41b",
    "signature": "0x0e0709594563b6e572bc9c882af19aaf5d12090368f11ba624f5e86dc6d82f907b832eb93221d1b678c3800e441776f2832924c2afdb325bc326ab0f96e909a81b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}