{
  "manageEntity": {
    "action": "Save",
    "entityId": "109593585",
    "entityType": "Track",
    "nonce": "0xba7af6b8f5bf00c2bdff1f7d55b1df5a0dc2b2553e4c2e80554df38e1006704b",
    "signature": "0xe8bfd6bb303dead9e8d8460482cef2a0c34ee667b72b25a821d863c7c62af0ca7899eadfa5bed572837fd470cf68ad96f756b6a895c9da992498aedbb8f8d7ed1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}