{
  "manageEntity": {
    "action": "Save",
    "entityId": "180063698",
    "entityType": "Track",
    "nonce": "0xbd251984f830026baca0b5821059173b7dc9c7f5c609564dfd5fd5f030f068b4",
    "signature": "0x5e751a98e380f7300072833197b61902d5142ad47537c8ddfe6e76ee9c90abf03f2f6ca5aa95ceac09185fb4d7e1f3a4fc7595a9eff3033213db7cda301c900e1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}