{
  "manageEntity": {
    "action": "Save",
    "entityId": "835641662",
    "entityType": "Track",
    "nonce": "0x5bae1f76e88c69c3c9fcdc7a3da9dce297b07946f352505907fc16e7c8b75b27",
    "signature": "0x5fda4a01525dd4742d15dee115c0ca073dd1681a2ad134878bb078dbb0135348039d1ddd161e1d7b3dccfd0de9f976113e6d043139a1bec6b6c0f926deeeddfe1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}