{
  "manageEntity": {
    "action": "Save",
    "entityId": "181882295",
    "entityType": "Track",
    "nonce": "0xf3463411aeab6619b989c376cf96b6fa10f283d122fec9c9bdf0a21202ef160a",
    "signature": "0xdb260af8ddb20905e0491c8f1e6bbfdbc67302a4bcc925205eea396b2f12c54833011e76c6781cf5fb9b66026005b0de0457c7044a6e783adb36a71aa07ed2451b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}