{
  "manageEntity": {
    "action": "Save",
    "entityId": "1648022106",
    "entityType": "Track",
    "nonce": "0xfb83d7031bd1fc9540dc25221afcf576258b9b932e67fc2bc1ab3df5719c8d42",
    "signature": "0x13cef424569bc42d3bc735a9e979520c3f0be581aabc9c891e50307926c2b43d627c177669180c073dbf31ef7b76b0a8df2b0a44bb06403739fababcfde5e8c11c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}