{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "340018",
    "entityType": "Track",
    "nonce": "0xd981f1b55598f8802de4ea2a38d3c1a136a5a7a406ca4eff79cf8682aa585c03",
    "signature": "0x380eeb2ad9a063e96d7ed0e6e66d57c381160e4ac5de73616b26a6d860b9b3c514ca8ad4cbeccb53c5c02774a4a165545dcd36bc2671d9e4e5376795c91f52ce1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}