{
"manageEntity": {
"action": "Save",
"entityId": "1789263150",
"entityType": "Track",
"nonce": "0x5f62496d29a8ad8833be2b3a70b2bdd9fb886d540ba61bb20d661969f9951d20",
"signature": "0x75fdd16ce1df95f1d738f4d0ec87c9be91c70422e3489202df76dc6eed8096db715d23c1869795ff202bdeb983048c91c2238f08e69324ee2c13cb387a9a6cc01c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}