{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "742312826",
    "entityType": "Track",
    "nonce": "0xd9a2e3bf33f8a4d60afd49eebad5911358b2a4a0fb4afa8520e57e07b630b7f6",
    "signature": "0xb817adc1e698f7eae7992883e3180db6003d28ab1d2907c9ca41e75df485cf3346202bc61eaa2d729172b93209ad290acddf3f3724643a85ea400ade39326ec21b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}