{
  "manageEntity": {
    "action": "Save",
    "entityId": "41064444",
    "entityType": "Track",
    "nonce": "0x8986884962e86f8c52c0f8eb05b9c73fb9d9d0587cb85450e7c440ded31ef20c",
    "signature": "0x97bded3d6d4e0c7b9be2d54b9e1fbf11ee059101aedb2e181337f5822d378ed228c3ac45e6f149eb14665385a09b615ddb7496a9958d7686cabf86e3b89deabf1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}