{
  "manageEntity": {
    "action": "Save",
    "entityId": "1199130160",
    "entityType": "Track",
    "nonce": "0xd2d2e651585f317e40050e4fed34e0f2620a882cfa37091d835c9a11a62c15bd",
    "signature": "0x70fb35846ac0295710c2bdbfdf0723551ebb9fbfd3938e4a2b0713bdd3fd9bf32b5154ff4b33a3e561aff035ae435e912ed268ddb6328bd19e0876eaa907dc331c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}