{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "966144992",
    "entityType": "Track",
    "nonce": "0x8b3d11338acba806926f54305b27b0d4d40459d044a2f1dffe0a69ede08ca3f4",
    "signature": "0xdedd24d76fc24d7047654a522cdf657da71fba80a2fdd82e387125c2006fbfb01abcc4afe95bc10a596b34d82e4177596da525284da2e540d22baf4b88a4d3761b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}