{
  "manageEntity": {
    "action": "Save",
    "entityId": "135116658",
    "entityType": "Track",
    "nonce": "0x7b46ea450b2c436ab8461bc793defde56c8a27fb34c7cfc9e29acfb24ad9800a",
    "signature": "0xfb03ef6075ccd6f2c6b516b3b91964cdf4021cd7db286b70b45defa6b837512b014a0f18756b31297cca19306a8cf276f07bf4411bd8fb2d7215e2c0610c719f1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}