{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1959242982",
    "entityType": "Track",
    "nonce": "0x03db6a0e8ad4993956fbe92b4987fe2bc767d005378a3587f67bd454ac17b2ab",
    "signature": "0xd4703b4881109ae99d932a39b6cb81921e603dadd5e87aa19c64e485a8d34ad01900e69da16eeb3746f6f76c51bb79bf0d169e7f31ec7272193971bc9247ee6d1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}