{
"manageEntity": {
"action": "Save",
"entityId": "735769182",
"entityType": "Track",
"nonce": "1792370882597717696",
"signature": "0xa613ca304709ebc4e56673b671d0f0003ebd623bbac45cf5b01724a603c5d317220a5022bc792ca96bef6ab3f54a62b9526eb0324eb7f155b0c30c3ca1d1a61c1b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}