{
  "manageEntity": {
    "action": "Save",
    "entityId": "1178730458",
    "entityType": "Track",
    "nonce": "0x28995309c82c86b1c6481efb220d75d71cc29f00becd7883c7331b62303d18be",
    "signature": "0xe325382747eb005925c3683742b4080285daa29f3fb7d539840cd774c9635a4f12c7c7bc879bc4a4d21b3012b60044633c67480d3d67e0d5dc505f7795a5eb121b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}