{
  "manageEntity": {
    "action": "Save",
    "entityId": "1063094994",
    "entityType": "Track",
    "nonce": "0x703b672021a46955a4f919c85541246e8dce792e331aefd64aed9e522caa45b0",
    "signature": "0xe546dbd1a002a79d1b9fafe4620c9fcf7315529915559ce1f9ce4008f563650f58032a3452d1fd47d19eec8ca50c66b9f2e94ac15f9e53cee7cb9783b7c3a05a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}