{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "821203035",
    "entityType": "Track",
    "nonce": "0xc6f5f2420b87d319c90284613961caf5e98ef9bbd89d6f474d8135acdb87069e",
    "signature": "0x3329d1de9995b5896a1274cc50d5eb724f18f7b55398672e02e219c86f7f836854dbff13fdc1df6a5218bfc81da7577da41b8ce4a89eae6715d69347ae1a88051b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}