{
"manageEntity": {
"action": "Save",
"entityId": "597078528",
"entityType": "Track",
"nonce": "1793305194768379187",
"signature": "0x4f9e23d1fae81634ecdbb1accfd6605277f1c1628cfd74657981cf031e8f0d1644b7279f5965867b407ea4db66df02b8252b41e6cd91b054f06394644f3760811b",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}