{
  "manageEntity": {
    "action": "Save",
    "entityId": "2033749132",
    "entityType": "Track",
    "nonce": "0xcb36f10ad0d85b565653a0a3d7f82ff2f1ea6a587bf372df357dbe72373a4a56",
    "signature": "0xb8072c7183cf09d9e325d495566a7982521e96113893025287a9bf63b8013c1a062bfc0f45b066aa6f77d3d07e26b65991e04447df4453baf085da8db0c38a281b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}