{
"manageEntity": {
"action": "Save",
"entityId": "1628561716",
"entityType": "Track",
"nonce": "0xe1b9ff07c0d64ce62edd51e368815894ba0e8b7d283b35a7bc7b50b9ed6f32a5",
"signature": "0x35eb20a7879182058ed3eb1c2651557dcb29766a105da300ff637aefaf91459e3c9e611f930323a485d419598491ccef053f2c489513cf71c93253ebd293c8041c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}