{
  "manageEntity": {
    "action": "Save",
    "entityId": "711306",
    "entityType": "Track",
    "nonce": "0x4d7692a9f3c6c3a920f3285f4625804aec30845492584e48a20a20b64c9a47be",
    "signature": "0xd9919f481cc1f9a20f9f2a37c31019b55906d0be4eb9713211151114052807ff4a31f67f788e9c9560d2a21fd78dd5387d5565469f636265321113450882be7b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}