{
  "manageEntity": {
    "action": "Save",
    "entityId": "1993492237",
    "entityType": "Track",
    "nonce": "0x458f18d2b96d6d5cac0cb41f8b8fdb85ee915680066ee5caa9cf8c32e1552db7",
    "signature": "0xc3f31f1d40c9aa751637a06d0bac196706d8a803a3c29348767bcd03740165bc695c6f4f9490e1fbc1ba519d7fb8675963e1fe82babe484e1587d9251d62f5bf1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}