{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309316086",
    "entityType": "Track",
    "nonce": "0x62ceb7f308be91bab36cdc1dc391dce4e2042ea09cad881f21f88f9941baf4e8",
    "signature": "0xf945f747113c8b81de4e4ed5473421235e6fc066e08976f7b1da6d682a44ccf754a526ddcbcc499a9b2a2a08c1c4a9b2c6df78542f2f1801b293bb4916070f151c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}