{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270172418",
    "entityType": "Track",
    "nonce": "0xa622931ae7059ac3e56beacb29a0fca40575eb33071292d01f330b769b514196",
    "signature": "0x646c73cfb52f2fe89ac5b7dc960e3893e4caa9bfbacd96ba4cb1c7e2af57e93420befe634c86e0c7587f2df786634eb49af570bc2969cb48ff4cf06217236c3c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}