{
  "manageEntity": {
    "action": "Save",
    "entityId": "286182",
    "entityType": "Track",
    "nonce": "0xa72f715d42190587f23d3910ad30b20e6040ddf7aeeb2baf416600681901f046",
    "signature": "0x1346cc99b9f278f80b6866e5765a86b8ac916558cac06dbb811f2ab67805928b582b0b9d1159cedab73d452c89bc31a81a94e0f3af04cc3ffc23babc4b331f321b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}