{
  "manageEntity": {
    "action": "Save",
    "entityId": "1684033962",
    "entityType": "Track",
    "nonce": "0xb4149e699d6560273d05d94658cd4cce3066fdeda951515001be7ad59d5dec16",
    "signature": "0x60a4988688430928d7ee6bd74c532955927ba8d58aefab492ce611d1166ca4ff1857efeb7b406948b18872faddb3f614f3ee41e4045f96bc1a8f3b2a07f10b591c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}