{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "266899367",
    "entityType": "Track",
    "nonce": "0x68cd654dd11de9d778c7f553a2b54ecc2d17eca6b22f2c159c442b09f03a741b",
    "signature": "0xd3e7fc50b9e204cecd8defa5ad18ce43e62f689f70ed21807a209e7985cfb988076fdd45ae60494a9bda7a0c18b92fdaf1ad6124592e2dd295f3464262048faf1b",
    "signer": "0xb1Ffd68A7E33f03445daf78201aED429bff324D8",
    "userId": "593005307"
  }
}