{
  "manageEntity": {
    "action": "Save",
    "entityId": "955341181",
    "entityType": "Track",
    "nonce": "0xbee9b05b75f89715abbeb2a6354dee0a6f174d83c2ef54cba65c2cefb4a55fed",
    "signature": "0xf36e96529942b4c6902fb675b95cbaaffd05819917adc53d090e8a5e3343dead6d5382d3b7bc370880dc5d59f3a5684ac2e945c975b8f9701240bf453d32fef31b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}