{
  "manageEntity": {
    "action": "Save",
    "entityId": "802957046",
    "entityType": "Track",
    "nonce": "0x95e403e203b3947bcd439bbacc49736274c5e44b480705f332c3904f34ccf705",
    "signature": "0xfc30b70d861224c2ec1d660d8063a57fd7f02dc238c07c13cf743d6849a268e157945700b354d0a935d946a87560a744bf1969175d8bd59272bf0ca1701945781c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}