{
  "manageEntity": {
    "action": "Save",
    "entityId": "2132292515",
    "entityType": "Track",
    "nonce": "0xdcb036fd84a7cd75456482478055c6c4238a8fa7f1975732af60377d6cf471bd",
    "signature": "0x91248e19b6b085f3a2fdeef58342a731b11f0af11b4d4c4ab998674935bf7fcd03382a3f91282a9a5b6fbe294622ce2bedc50bc7b56a1291e7043d7a916fc6571b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}