{
"manageEntity": {
"action": "Save",
"entityId": "1610933634",
"entityType": "Track",
"nonce": "1794072936676883573",
"signature": "0xf2fa491f0679e69a59396d74ed918371fe75f4684f4e5cc159b89696611fa2d271f180967044f5b9c9db47a9fbca6957c9251e58dd99161562499384eb03323c1c",
"signer": "0x904F7239B5fcE4Fb6c57888FFFA2ABCFD667ADE9",
"userId": "424399339"
}
}