{
  "manageEntity": {
    "action": "Save",
    "entityId": "460284010",
    "entityType": "Track",
    "nonce": "0x01350fe795febcc128d2ec7659ee293d62fa78f8cfa4600a546a9c943b06df4b",
    "signature": "0xe885b6f441f57a77ba52369e93a08cc8fc85e9aba00bf36c285d67032b0afbe51832d33d25ccfdf21b4f366943acaac5bba7098fa1c8e7f0685830ef1261a27b1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}