{
  "manageEntity": {
    "action": "Save",
    "entityId": "1693277927",
    "entityType": "Track",
    "nonce": "0x8c292e7c8a9b4c6da4cdd881d9a36b69430fadf667800b759078616f7725ce0e",
    "signature": "0x45ee33264692ceb6b06d7ccc22c7cda54cc0aeb8e3127f186a7b8fbdfcbf59ef337d887993215f6e4b2171b5e9a0120c914cabe26afb26c76e281d55b26c2fbf1c",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}