{
  "manageEntity": {
    "action": "Save",
    "entityId": "1658127771",
    "entityType": "Track",
    "nonce": "0x889e172c233fe770a521e838204f541a535b10e452b6176ce0a84173a1f91572",
    "signature": "0xfb3c92dc3328066bebc43cdd455ad85cde2be6204988f34a122cb42e734721f856010caa9e872b67376bcdbecb7c0b0fddc45761060591ad38204fbe979d89e21b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}