{
  "manageEntity": {
    "action": "Save",
    "entityId": "1396382675",
    "entityType": "Track",
    "nonce": "0xecbf43d814a716091d27b48359c0eb93a5289d415fceec521a32ab1e2e31cee9",
    "signature": "0x0bd610091d195e85342212dff6631bdf815e30c6d0c3bfd6cdbd9b320a75a6ca2d2c4e79c5d6347763b4ad85e0744d703b3bef284e0a206a57891f1b49c8a7b51b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}