{
  "manageEntity": {
    "action": "Save",
    "entityId": "1121108864",
    "entityType": "Track",
    "nonce": "0xcb04815f17385df957f1223aee79d80eb325968b946867b86fdbcf0553396dcc",
    "signature": "0x52b276bfb97daa510022354767f4ff83dad8916f4ad4ac0579fd055b90ee55897e88cdab074233e3f69be8056ef74b0c5f64193d9bbd83666be854cb2d6cb2fe1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}