{
"manageEntity": {
"action": "Save",
"entityId": "1947574408",
"entityType": "Track",
"nonce": "0x31d75284ed5e726dd1990c87fefa8d8b0fd4fa7e72e634c43261929d73e4210f",
"signature": "0xe6b936aba0e6832932084b78a190d4d791861ac9b57b12406166c53bf2270956707856a9d4b8de6d6ece7a0684baa23a43b605c2a646f7e590d31bb3ab5d372d1c",
"signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
"userId": "508186998"
}
}