{
  "manageEntity": {
    "action": "Save",
    "entityId": "795788665",
    "entityType": "Track",
    "nonce": "1787490444449392000",
    "signature": "0xdfd9808f70bb24afacd099e61a8143283508b9f755d139e893c9a3df94e435a03acab73e127efbda2bdf5168b2d1be442866619ead547ef4d2c74144d21bb2231c",
    "signer": "0x2cc593FC814461263d282A84286Fd4F72c79562e",
    "userId": "175201368"
  }
}