{
  "manageEntity": {
    "action": "Save",
    "entityId": "1667346950",
    "entityType": "Track",
    "nonce": "0x7796e61821a56262feb3dcff48c353b8dc466d84e23d62dd1933d7a684ec9113",
    "signature": "0x8325a4c01ffb572a53ba784566785d03e0d3dbe25d678456ce9493dc6720675e72533113aacd5c13fea2e17d0ffe9fceea1c552309aa41b25008d6b3475248991b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}