{
  "manageEntity": {
    "action": "Save",
    "entityId": "1754709120",
    "entityType": "Track",
    "nonce": "0x90622ccea9f9b550e7f306b40f47c5872a1a1d747c7e6a56f84e6a6908996503",
    "signature": "0x0c3c0b4c1e6943374a169cb65b87b85b5fecfe5b699b92ef21456530935822a651916557020f38658d2b14ca11f64b44824b74b13b3f2e075e848fa470334ad21b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}