{
  "manageEntity": {
    "action": "Save",
    "entityId": "1745408157",
    "entityType": "Track",
    "nonce": "0xe98010318824b18ccab3d01129f51856cea3de6eb7f485df8992c930f4ae9339",
    "signature": "0x1b2c826701b4b2395b6cc1b84bb31ed0d2866e06c86d486ff0fd4e021070e2e32bcdb4938c6b8c1527bcb4a53e23207c8fd7f2fbf232d8148fbac8933dce99d51c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}