{
  "manageEntity": {
    "action": "Save",
    "entityId": "1071334116",
    "entityType": "Track",
    "nonce": "0x17c4a5d060cb65908789384df79f5696f27116604c26200b96aeef456ecbe4c6",
    "signature": "0x3c712841d2e2489dfe7657613a68b61a3a74f3cb278eb6e0a2717b26961e9bd876d97ea65543e35099282f99949c4b57d5a59a5161b6738ce160b97f1d645f5c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}