{
  "manageEntity": {
    "action": "Save",
    "entityId": "951532",
    "entityType": "Track",
    "nonce": "0x5f57a6d785ddabe3dd085f86a925c1cf440aee6c143ee1429100571f0e95e9bb",
    "signature": "0x33662b0ebd73ef5eb0728c743ec73a65883da4e9d85382a2033dda5f1099fefe20408b9f9e6a0f52c598bc01887a03b9d547690d2f948961f6bb3876a56c63b21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}