{
  "manageEntity": {
    "action": "Save",
    "entityId": "2123157230",
    "entityType": "Track",
    "nonce": "0xb3e26b5a0d448246e6f9ad7c52cf44592279cb6addc9669d6f27e28b21c7e516",
    "signature": "0x62431803f4ba6a6f198ed037d4dab2e535a342df3b57493fd9caf1e5ddd69a1855a4a321baec6154f3320b471e09b9e8d2a8800f7ca24c1192548c4cf03011921b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}