{
  "manageEntity": {
    "action": "Save",
    "entityId": "1379001079",
    "entityType": "Track",
    "nonce": "0xce2f35f155d219a08501429a159e9e8bfd4f7d416670799c4f8abe792681246d",
    "signature": "0x88399e7db7361e8c7c59d4fb3b79ebfdf0d401e29ffc4c35650d030a37571de00b10056e1b15192de48c411b65a0ce4360f899d2438928ba9fcc9ece7ee7ff0c1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}