{
  "manageEntity": {
    "action": "Save",
    "entityId": "1080258879",
    "entityType": "Track",
    "nonce": "0x322f1112db30dd800b922f33ed9a1efbecb6ff43e57923f25bc8ee13e6ca7af4",
    "signature": "0x140108ba5eb71b2f3ad3cd131cd008c39e45ed1cca8642cbb01a745b4603fc6f46c8791c6d0cf9fb3ad4c277642f7849535eafd80ec781bc2b65292cc96c0ec51c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}