{
"manageEntity": {
"action": "Save",
"entityId": "1741236479",
"entityType": "Track",
"nonce": "1791152641066225294",
"signature": "0x6367c90f0c9972a67d0f0110b6f12c34c7566e4c2df0ebe941e821641d58f5892442bf96b2360bfa31069b918587a0239e3922604d2122aacf68c6d80a34011b1c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}