{
  "manageEntity": {
    "action": "Save",
    "entityId": "1019533890",
    "entityType": "Track",
    "nonce": "0x07963b258d7b8ad1af18d435062aaf8a2d2611b6e070870f85d48f0da29d87bb",
    "signature": "0x86a995ce5a0c565685249a9e7f83b48c6ce7c66172eca3eaa2dfabdbd8a3045f5cc5998adc1bfb11be38c14c37ce325b226fd8b1737bf0a617cd402c4c19659f1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}