{
  "manageEntity": {
    "action": "Save",
    "entityId": "1595154754",
    "entityType": "Track",
    "nonce": "0x7a2a46f50db6feb02f47b1917dd93faf6eaaf4f5c826a7e6ce513e6da498c31e",
    "signature": "0x39f28db8dc2fe38aef1614e2f3fd00b53c5ffd6d55de451a6c5f44c872c9778501a7d7df5d6165d531024588819b72531a41e7420c012fad6d7cb259cc1b92851c",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}