{
  "manageEntity": {
    "action": "Save",
    "entityId": "175813569",
    "entityType": "Track",
    "nonce": "0x024ee31e2da7df7468bee3a2a2704096cfe1506882cce9a301399566c30225ae",
    "signature": "0x68ceca19fcacfcd766e4bc6000cfe30c2c70d6655d09f099d15c68ceba5b90862a3959f80ab11c11578bb7b4622df4a6ca4641ac65ebbee8ea72975643c6f6601c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}