{
"manageEntity": {
"action": "Save",
"entityId": "1408928173",
"entityType": "Track",
"nonce": "0x12987a2e8ddc0e8d57bfc61f98714429d005674c971a3d58d012961f9b114b3b",
"signature": "0x4f872ed9d368f4e6713643873715341f4c282169419e086f7a8d00f25ae30db76f16eab668202b8b4916650193b6f7f11b5c74853178c404307e84bdf0ec4b6c1b",
"signer": "0x344Cc6Cd6326A3Fc46e2f789e02111af483Df673",
"userId": "980331"
}
}