{
  "manageEntity": {
    "action": "Save",
    "entityId": "595064",
    "entityType": "Track",
    "nonce": "0x6f7918b464aecbf448e293d7ac3525176b60fee3d0692e4bb61fddfcdd6c349a",
    "signature": "0x935b1101c72476528956741595b722f88cadda57df0017347e5d077694237c6c45225ebe2e1ff9cd0609010a43f9dd02cd90b5c1399953b67bde05494ab5aa641c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}