{
  "manageEntity": {
    "action": "Save",
    "entityId": "1909833270",
    "entityType": "Track",
    "nonce": "0x08077dccc678e28a332cbe53f61839cb902ceb7e3a2f4f2887918543425a752c",
    "signature": "0x17f9aea0ddef6e3dba24e523fb714d440036a279d958ca805b15bfb1e353c9063e2767077fc34aecd084288ebe791952f101fe87b2a35b7a04e3df9f888ae5121c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}