{
  "manageEntity": {
    "action": "Save",
    "entityId": "2031682684",
    "entityType": "Track",
    "nonce": "0xf6d617bc8b8e79a4bedced1b0b783a63f743ed5d0dd0b90d938887a4cf20f32a",
    "signature": "0xb057ea12224cdb1dd5186abdea3a716461d8bf1f285c56459ee61dcc36412a25217274387c8628fc9741406c1a848b3972ffe715cfa3fce2dda85621c483064a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}