{
"manageEntity": {
"action": "Save",
"entityId": "13340",
"entityType": "Track",
"nonce": "0x0d8afeb29da2c94b9fcd872afdad71f1b24a5a64f886dbbba1394d67941e4ebd",
"signature": "0x9df0a4444d257d0f40e441febc0736df401c518dfd4910da31fcf87450924344354612fb130d35831a3d8b37d1fbcf85c233bd7abd744ec2e416af00719e6b961c",
"signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
"userId": "670307808"
}
}