{
  "manageEntity": {
    "action": "Save",
    "entityId": "104359",
    "entityType": "Track",
    "nonce": "0x4ae63b44f66361ef632c7ff8855ab9ccb68e6fb9c766e4788c308da2b34e11db",
    "signature": "0x7ce56909ef64307493f38d5c986939b1a6aa133ff14d65acee496af5dbd9f6ca5d94e53e18f8c64533423d56593d9d4fe1679bf8ff590a7d13ce2d18eb62acaf1b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}