{
  "manageEntity": {
    "action": "Save",
    "entityId": "262118",
    "entityType": "Track",
    "nonce": "0xa3ce49c202b1a78469d9c5f894e722eb3e2779d3bc239554857a6ec08893b8ca",
    "signature": "0xb2c41fe28d1c71bfa07d097a7612dc8fde97e4dbd7f4915d938c1f88773c850641e8bed685ab57c97c1be90d651f9d37152a479e4fe23bcb037635360e8f7b351c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}