{
  "manageEntity": {
    "action": "Save",
    "entityId": "126779",
    "entityType": "Track",
    "nonce": "0xac283a62b54e706d0e38528c55f0e6febed78406de2288466c4315467c9aaaa0",
    "signature": "0xa2cad2226ca97f305bad5d7d5faaa51b9a4e50a0b994cad3f0e032264eb1ce8e5e7465856e23a12609f6762ebe89ea36db50e9075e48503495ae90b573be77d91b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}