{
  "manageEntity": {
    "action": "Save",
    "entityId": "916939222",
    "entityType": "Track",
    "nonce": "0xed36c2eff95ace01c9b19d3b90737b6d87a884e9c4634537cc7aaa0eceab7896",
    "signature": "0xee9cace2f01140ddd61ec5bbc6d40e0da5070cb020b363e9fd0379bfa31b5370638d8f53788b52c957817d7101aca13831737ad0f9046db34d9f87f057df945f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}