{
"manageEntity": {
"action": "Save",
"entityId": "1780691444",
"entityType": "Track",
"nonce": "0xda265639936498fef4c295df297d7a81c96c6e8de3a7406dc6c0362aba5a3964",
"signature": "0xdcf9513c14bf10c8b21c6a58e01f199b6379c5d9bae95176b7406c62a8b47a50434cff3109fc8f7799bad0d305c27ec68e7cd77253c810d656f53d4a6a39477e1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}