{
  "manageEntity": {
    "action": "Save",
    "entityId": "2136929333",
    "entityType": "Track",
    "nonce": "0x4764d068a2695f83de8b3122beac841527ae403fd1c2569484b2db5e259890a9",
    "signature": "0x3c52a2862040c45a570015c7ebe655a57d741ccb4e06fc0d58f6a5ef075fc76e01eaf5902f6567f7a27a30f5634b41f0f78c735e8b7d9b94a05344d0dad378c61b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}