{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1308411920",
    "entityType": "Track",
    "nonce": "0xc4a4f3bffecf701f186ba0f7a853df66301a699ff3534d43f212c727d777e607",
    "signature": "0xe89db36617d330093a144aa5a00ea5f0c281d94c2ec06e235721260fed48f16f45404f491b1d249282dc85a07df1c3a3d1da77ed30f9b6e9c38dcde4dc40f7891b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}