{
"manageEntity": {
"action": "Save",
"entityId": "323436999",
"entityType": "Track",
"nonce": "0x2635a90643b88b16410f33645c9a06b636bf162006832182df15cc77973747cd",
"signature": "0x4ac4f2e30376af0fbc6cc1266555634b6481be79ad09df70f02e1c45fc1ee332789f63c68d22e0dad86141d07dc58d3067219ccc2bf5e3781fda5ae002c173691c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}