{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006581",
    "entityType": "Track",
    "nonce": "0xb92e2038b009e9ad26031d4e1d45066358c28ffe03879ce765fa237c2ca1c2aa",
    "signature": "0xcb2a5127430a90ca4f33a7f5d5ad17a7ee5eb1fb2ae7dd52080548ebbd4326677470984383782760b04267fb3e30788846c634076b7467d9e93af7b8204eb9c61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}