{
"manageEntity": {
"action": "Save",
"entityId": "669830549",
"entityType": "Track",
"nonce": "0xf12717ad43c5312bebee8b3a2f2a5b2e50cbcc26828407396772332dd3d5f11a",
"signature": "0xb91f209801da12f88bb8f031031025e281d197c83f9330dd2c75d09bb05e5efb0e8d73368f693ab139089673e4d09934c07a4339651516e5d1dc6a47c8f9b72e1b",
"signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
"userId": "92019297"
}
}