{
"manageEntity": {
"action": "Save",
"entityId": "544293802",
"entityType": "Track",
"nonce": "1786137564855733552",
"signature": "0x3b92a478b408360bbafc8c56f9e0226fb4eed7feb2b8d60cc6b84b7dc552d3a76d148f105d42de14bfbf35ea8b4347196d16439ee6b3a5c478d1b340f6b44ccf1c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}