{
  "manageEntity": {
    "action": "Save",
    "entityId": "834824503",
    "entityType": "Track",
    "nonce": "0xb2672a316668bd314f58e479afb0023c05592f68c3c56ca29ca8ebdc70b5b0f3",
    "signature": "0x524cd2389ca5c12d6b95366590271b6aa2128735089f826c9aa158f18c191f4468fe7d1a83a266ba8e23bd7cfecb89de9dcd0ba8060aaa7719b1d979028f13ce1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}