{
  "manageEntity": {
    "action": "Save",
    "entityId": "1132296329",
    "entityType": "Track",
    "nonce": "0x5a71c536555c5c01876e54b067d5b640c319a9c1bcdd7eabbb49cc0eb3aa729b",
    "signature": "0x1a0517e6bf0e44ef0806e956f1eef138b2d7100bad9d97524d4cead54459b73122c0a8eeb43650b254251ed1d16bffe1f0b09445b39709ff2acc85eb020ad9d31c",
    "signer": "0x1D0c500EC847246923045cB0a285242A93723f30",
    "userId": "302385956"
  }
}