{
  "manageEntity": {
    "action": "Save",
    "entityId": "85307",
    "entityType": "Track",
    "nonce": "0x54b3e5b84c09fac0ca8c304c7c6be298dadda0952ade009820a29e260eeea6ee",
    "signature": "0x1604bee7ec7e9bfa2a0d1897b29f1d36d2560035207a9ef67499a95fb5d31cf1381c5820ea20c96cdc849e80a70b32c9f1de9078834867325296e1a0ea587a9d1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}