{
  "manageEntity": {
    "action": "Save",
    "entityId": "1078211771",
    "entityType": "Track",
    "nonce": "0x1cc3b196723858ed66103f1a15d930207d4c5eb1b564619b31dc9317d6a93df2",
    "signature": "0x52f7c395f44748dda338a293252acdacab5c44b070e8be28454cba81c3eacce96866169dac492cac8c47948f622b71b3dd85a5ee76af8cc598fe8e9fd56dcc5b1b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}