{
  "manageEntity": {
    "action": "Save",
    "entityId": "1653219793",
    "entityType": "Track",
    "nonce": "0x6e10ced0f097175a40b6b3274d6736a19d7044f554444ea0dfaec5f38cbe1353",
    "signature": "0xae89e0acd16ea2ec061e11ca30f5ccc7209e2299ea3bafc94de30fe04269ffcb427fdd1b5da2a311ca0f712fc9da4638720c14c0f0ee4c91e7fbee3be0a2d8541c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}