{
  "manageEntity": {
    "action": "Save",
    "entityId": "2123157230",
    "entityType": "Track",
    "nonce": "0x1696d09e8ab25e788849948dc6d8cdfb03e5f6f3029959b821a33e6275378816",
    "signature": "0xe4fd541e2b32593494b087a4526cb9faad3e18a2b801f589e6279ee344de358a07aacb33b785de3657f5b9a6dbbc8d0cf37d86ce056724b2ad11c797f573ae421b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}