{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116793",
    "entityType": "Track",
    "nonce": "0xad382addd575b6b5c555df1a28f0fabe96b42b65d5001284798817eebb64a04f",
    "signature": "0x6d2f61246ecf641e0b137dfba8aaa4ade87d992ffd1bc6b47e2512ac16f9bc2f562b3ec5349c1e5ac0846f10d6c8b13a0131d690f7310a8df1e27fbb63b7ba241c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}