{
  "manageEntity": {
    "action": "Save",
    "entityId": "1166209473",
    "entityType": "Track",
    "nonce": "0x21f316e52b354cbd53757f54fda616d7d70c99246241253e877a63b354abf5f9",
    "signature": "0x962f213101df278c77f4a18d356bace4f9add17885f1314bfdbb9c91eabab2e01ebce6da8cfcf568aaba88b4e4d6e59d2981e03b7727b17d664c2988f2d241761b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}