{
  "manageEntity": {
    "action": "Save",
    "entityId": "1782050198",
    "entityType": "Track",
    "nonce": "0xc29cdead5f7104c8b4a6f5db5e767aac8b83b13e2f31bfc4baa67148f63e4fc8",
    "signature": "0xe9bb49dd856d127bf9c581b99035fb8d4e26fc360d683904fc3b4814410377252a4dafc2295d072aea60a42e83531cd40efd2a268c800ecb44f06e50c54b560e1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}