{
"manageEntity": {
"action": "Save",
"entityId": "539324169",
"entityType": "Track",
"nonce": "0x6bf09c5e0f71055bcde67e782738f636addce7fe6e8fb0abbc223599ed5a3bf8",
"signature": "0x86ac7ce48bd11c68f925f76a8986c2d7b8ea82a955deef81c8adf600bc94dd2d7f95a30c87cebe5a3431e5a51815a73882c107e3dbd1c7d02bbf756ea0ac5ee71b",
"signer": "0x65E206f484415ee5E20E9B8da531F689983C6e36",
"userId": "718637748"
}
}