{
  "manageEntity": {
    "action": "Save",
    "entityId": "1118996",
    "entityType": "Track",
    "nonce": "0x843338846c336bcedc5cd511bc10352e5812b54707b6649f367cba4927238b5d",
    "signature": "0x555d1b53df63f264d129a609de43f9e0eeab83c768452896dc675c3d1321ef9573baa2fefaf46c0838801c1b0bdb8c85737387147f6c0304139de5953e6552cb1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}