{
"manageEntity": {
"action": "Save",
"entityId": "562479939",
"entityType": "Track",
"nonce": "1792368036503905442",
"signature": "0xa80e53d5103edd313c94b25b140d0182a78fb7fba376d5a1fce3461f0bc442b974c21805b392d674142096f3239a0bf29f1ae831afd328c37d4abad9eb0a5c4d1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}