{
  "manageEntity": {
    "action": "Save",
    "entityId": "895874533",
    "entityType": "Track",
    "nonce": "0x233756db3973c0a43375cbdcede81274b2c92fe6670d64097f24d0165fdbe481",
    "signature": "0xa6ad7647e73f354c1420a76ada531be58c949b50e0fda280005fe3fc084834347528a1c2088e3f2f0cdce1bd0714348cff8dcc313d7d0735288d316b3a5a258d1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}