{
  "manageEntity": {
    "action": "Save",
    "entityId": "59875742",
    "entityType": "Track",
    "nonce": "0xb4ec0b134bec8ea8bd779b87536dc286a985afdf254a034d85373db2f5ae3036",
    "signature": "0x106e314e561ca9b645d84bab895601b5abaeccdcb607b00daf44152e2240e289328c2d44cb3b6e4f57289b09f07eaf62d8f5c5b0c4de44fb90aa0a05975c6e871b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}