{
  "manageEntity": {
    "action": "Save",
    "entityId": "114737417",
    "entityType": "Track",
    "nonce": "0xf5f91e9793b727519fdf9f14838cc9146d2b7b7183ac3bc1f5e911ae7b8500d6",
    "signature": "0x3a9c37270025a244c68b22f8ab84a7617d3bdebedf870474b7647d0fc3870c5c2c3ed7fdc9fdd6ed0466009e69d934744c2702be57907088ee25607e92bb77081b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}