{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094781396",
    "entityType": "Track",
    "nonce": "0x161556ae2b137773991b3a35f46df39d0e67449c0f7df1ce8cb9e544cf4babb8",
    "signature": "0x34e09a344376b85501525079fef6e6c7cc0264300a3215f966abe1cf55dc2cbd7b21088462da7a21c08f0ddca5dd405bf9c950a4c36a75a93b048387a855f2731c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}