{
"manageEntity": {
"action": "Save",
"entityId": "1231788806",
"entityType": "Track",
"nonce": "1792346255996267174",
"signature": "0x50731143f460bd4d264d8332b5a20a5da7298880e1b29b07aee0c371dbe15cf5752960ab5ae144399d6184a0c6fb9c56dee92b2aabdafaee70352631715834a91c",
"signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
"userId": "881446128"
}
}