{
  "manageEntity": {
    "action": "Save",
    "entityId": "1016088",
    "entityType": "Track",
    "nonce": "0x4c0915f65ccf1fd0a8f9c540408af55b5a98f62ff0825e281b4ee6067ba48fa1",
    "signature": "0x0b0c0cf0f6ab95499df8266ff6340c555aa63e74c27c11c7b49d2a47a53a4b8c043622f9b8d72d518e6eebe452ffb92530b9accd44e190d63ba464d48b9247d61c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}