{
  "manageEntity": {
    "action": "Save",
    "entityId": "11697",
    "entityType": "Track",
    "nonce": "0xd05195bfb46fcc5829a53d9a096404c073e32722d644ee2523261d1fc0a84d18",
    "signature": "0xabd8b3d6fbabab42eb43cf5a039b5aa54e0452c0c8186b705bb05f7d2a96d55c347edfb8680b37b8f850c0484aacd2589a132f71db9754faa6fd403d01c023e91c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}