{
  "manageEntity": {
    "action": "Save",
    "entityId": "1064538534",
    "entityType": "Track",
    "nonce": "0x859af64be2cd62133f72cb5051501a9a168aeadaf7ee19f7d6028815c5756f2a",
    "signature": "0x57ae0c8dfa21784da926854709a8cc5232748f9d84f025518707e879f2cdfbea59ea87e3bcdc215c2443dcab15345cdc1c91c5aa95cfdde83af28554b695baa31c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}