{
  "manageEntity": {
    "action": "Save",
    "entityId": "761306399",
    "entityType": "Track",
    "nonce": "0x4b0e5ed81aa3fa4984619a9078edf40e5856363052df581faad8fa7bb86d086d",
    "signature": "0xe9922be27c684ec289eff4dfdbfc440db30ae0a48b81bd0300f77bf0d9b2c2ee25d0807fdbcf5c1b067ceaa0c243b3ffdc66a891c809f5a0a02d14ea079843e41c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}