{
  "manageEntity": {
    "action": "Save",
    "entityId": "1389183281",
    "entityType": "Track",
    "nonce": "0x0af78cf1ec379baa7b0b223a025afa15c1ccb6b1b3208341e1b52ed3f2747727",
    "signature": "0x11ade4b3d0603cb52fbcc84146802678e3159ecdc888b087449853a053db29717fd87adc18c356232833c84030d88a0c4e0c32ebf42561efad3e3f7974b40aeb1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}