{
  "manageEntity": {
    "action": "Save",
    "entityId": "117150958",
    "entityType": "Track",
    "nonce": "0xe2e29f832d878fb0b3e81315223d8fc3e4833f7ce347fd225fd92e7b698ccdc6",
    "signature": "0xf1559c5f320a8c99e545e52b86734b669e46555f809deeec3805f71fe5ffe8156c5f82d94102f9b53bf70e1398ea31de6483651a84416ab7638c17e200c3267f1c",
    "signer": "0xd9bA17330fFb3Ea1356C5eC14971D9e1f2cb5200",
    "userId": "337125448"
  }
}