{
  "manageEntity": {
    "action": "Save",
    "entityId": "1105214",
    "entityType": "Track",
    "nonce": "0x18297111a3828c51102019543dc5288f455797ca89e2eeff911e29619e2dfafe",
    "signature": "0x20e2985343dd7d511951db4942d93ff76d0d343c7c38cd4f5282ec68018811051c19ca3d67bdd9adbe18501ec0397f493ceba83a9c6eeb9d358775e7d59cd6f71c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}