{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "242809",
    "entityType": "Track",
    "nonce": "0x2f9ca511ffe2aafa4775b48c2196a13fea7ec14112364382c7af91fb108b6991",
    "signature": "0xec58294f15c85a219eef6a2017232d57e7b6edc32591c5c79eac67ec99aec0c33289481817684ac91ccf068f11c0aa9d40ff15c6186b52b88b0bbeb484cda1bc1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}