{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "678281825",
    "entityType": "Track",
    "nonce": "0xf80d9963e71b7703187ca3966c6e72c7d15e21f77deaad379bd2f74d63fe7f40",
    "signature": "0xfad4583e01c45931dee82286f498d96f44c27244b50d31121b68c9d04ffd6fa24f0813797a9207788e74b913b37fd7eb1aa4629809308b9527799394a24eef9b1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}