{
"manageEntity": {
"action": "Download",
"entityId": "1401492531",
"entityType": "Track",
"nonce": "0xf22ec411006bc692679ec88659b35b560a2d48a072c1f590b93712d71f6b53a3",
"signature": "0xd9d51468c48d2b14d8d7269fa038971096a0557331642ee7d935aa5575629b1771e51bb194c6af0f479ab12cf9723ccb05746633bd144ea9aa47aa71a47c4dfd1b",
"signer": "0xF49D7Ec42d383F86c0EA965ab439A8CdA6485b0F",
"userId": "180816"
}
}