{
"manageEntity": {
"action": "Save",
"entityId": "1784098784",
"entityType": "Track",
"nonce": "0x6df7277e121eabfec4ce8e94dd1bc07fbab8b3a39bc581d8729673fc4cc0a2d9",
"signature": "0x76270704e1ece44488b8b7b1e6dd0da395c420bfa9e1ac6753b8ea14c1ee9ddb7f3c7d25c0febff25449c6f4dd342bd3696e0245a3125456cb1f1474ab94194b1c",
"signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
"userId": "854614078"
}
}