{
  "manageEntity": {
    "action": "Save",
    "entityId": "2137758354",
    "entityType": "Track",
    "nonce": "0xd12f8b3dd454339de0560cb665db911a18c0db9f53b6445dbc3f6f837e864cf1",
    "signature": "0x69a1c1bd5b4be8f339ceae33586887b2b47f2dff3cddaadae46959e3c75dd3c85ceb931cdd03ef0644c2112b732a2ecd386b53e2cf7fe49584ebe8e21bbe8a3a1c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}