{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "114145142",
    "entityType": "Track",
    "nonce": "0x632a53c9e22147d46df5aba7b818be9c3412bee8f98810640481c31f6d2a624c",
    "signature": "0xc26fb9f4d69a080de4a93319c69b609ca59d2d4815affe17c1a15e3cb42ffbc62f8b8d778ed00619e7c24b2a3df81c9abfa70b004ca88e44b80df11565b7e6a31b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}