{
"manageEntity": {
"action": "Save",
"entityId": "1978342971",
"entityType": "Track",
"nonce": "1793018727377655686",
"signature": "0x9aa5d62663e6640ee6de6b3d73331d4ad4d2a930b7d66f8dd76607fddaeeba130008e85abc27ee5b180ed81ad13ed8263e31a04e4a3902ce9115b539e820f5ab1c",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}