{
  "manageEntity": {
    "action": "Save",
    "entityId": "1457017351",
    "entityType": "Track",
    "nonce": "0x1330cce653e9f8ee9d18336714ff90c78bbc243e56c503e05648f8d748857415",
    "signature": "0x2f5fee0139cd5d8220a508b336ea44ca75f8e07bb063f21777ab02eeaa6be9f80e7c50a21d357ce603e7b71f6693aa611ccf5326d5810ef3955b9179e270a0471b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}