{
  "manageEntity": {
    "action": "Save",
    "entityId": "28542916",
    "entityType": "Track",
    "nonce": "0xce0095224bcd76081b6720dc2625f5321b20beac85532cdf12ad68de1d2e09e7",
    "signature": "0x48c7395d5f921c4803b38c7857ba735db591fb4d4d70890eb6a0f3f118ac92fd74074270b64930035cb60cf8e04b9f531dc216617c571177a6fba6e1b5da44e71b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}