{
  "manageEntity": {
    "action": "Save",
    "entityId": "984605",
    "entityType": "Track",
    "nonce": "0x1062fcc5b8b9c063e331cfe809cdb178b5e4c79c5ed3e5a826a5f8b3675d21bb",
    "signature": "0x4de9d5896b9a306a7d67b3e03d4fc54265e86ef338686db59abc61d6aa209e925986de94cdde6f627f352f46d6c1de1a6d3ed7d037176e53a2875b01fee6d6171b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}