{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088553692",
    "entityType": "Track",
    "nonce": "0x13024210e421d6d6dff07ff635967ebc2f592bcbdc8190ec4f11b86b6ec446be",
    "signature": "0x7d30a6cdcbaa9e5db7048f6c952811bfb7989d5009bca9226c17d792267cfd6700d4242f39b5581b2e8959721639a1aba3e7510838ac1cdecea00bbfe57fe5e11c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}