{
"manageEntity": {
"action": "Save",
"entityId": "1688460030",
"entityType": "Track",
"nonce": "1794010115566674007",
"signature": "0x8806567f8448c5fb9829bb5d869c65db2cef388e7c420b7ce3a49d87bbd3df7a0bbfc309044ed7ce33ac47c032ed9a84382d029296c49a23ffaa15e7033216e21c",
"signer": "0xE9e5656ce6F7Fe41FDbCA982901407eB55765cD3",
"userId": "670307808"
}
}