{
"manageEntity": {
"action": "Save",
"entityId": "366773494",
"entityType": "Track",
"nonce": "0xcd68f2ae52015c3212f4bf5bfb03e21f398c1799777eb76ce8935c8c87f71a74",
"signature": "0x7b71a449a7e48a20132cea6db90cf9ea05fae2f7666ec075b29b36d86d5c5a75766212bc5eeb10870e97b86f773d0a2be4c6e6254e17e9c0e10d806a70d6cee81b",
"signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
"userId": "98311147"
}
}