{
"manageEntity": {
"action": "Save",
"entityId": "1564855223",
"entityType": "Track",
"nonce": "1793546444694624554",
"signature": "0x19de86c5fd1033ca3021c729b3ab412fcba6fcd8e3a5151af23ced7ad8f4e8f01ac7d17ca40cce5d4aa7234d7482f3e598fb7f493915915ebf153f8d34c61c2c1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}