{
"manageEntity": {
"action": "Save",
"entityId": "1781737336",
"entityType": "Track",
"nonce": "1793356752040210048",
"signature": "0x7945f290a7d3f67e4a3ba7275f04171888b83cc252cfacd48b518911971f3965046b5eb43e5fcac515be3a563fe0aec230aba62d98583a41175c924e3ac84a281b",
"signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
"userId": "881446128"
}
}