{
  "manageEntity": {
    "action": "Save",
    "entityId": "1336061539",
    "entityType": "Track",
    "nonce": "0x2613f5361f540896052401cc9440a06047a067b7b6df85d5581e7e722657d440",
    "signature": "0x195330a1a487849952834cede902516efbac05b6b400682628c5cf4c38f76b8645553262f5c777214d684ef40c7eb564758c0a14445b8f01c79fedb457e34e391b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}