{
  "manageEntity": {
    "action": "Save",
    "entityId": "1228229393",
    "entityType": "Track",
    "nonce": "0xe941e614979b6910d6e4560f6d6777febb692bdcf933a1cd43b7b91a15327937",
    "signature": "0xd2014297157b0b125a4a0796cd19ef2f24bad5ce26cca58fa8a1346a5a2919432ad15d8c6a1613e4e94f1fd2586f1f50d5089fdb8df4da4237421a8f4fdb281e1c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}