{
"manageEntity": {
"action": "Download",
"entityId": "21137898",
"entityType": "Track",
"nonce": "0x2105bf32436afd0c86e6bb157d58933e1a8f8b6fb2dcda6857d24f782d14d7ed",
"signature": "0x7e57d38e17ca29efe5346910ab80dd129cbce2a666e459918359bbb5e4f885c86dfd153bb29becfc157117b5d4ff286de881974e0def3254981e8e5de5edb9491b",
"signer": "0xF1fC1d1C5e0Fa2C37eb724f58476fFAff5ADbDdb",
"userId": "557158813"
}
}