{
"manageEntity": {
"action": "Save",
"entityId": "572165572",
"entityType": "Track",
"nonce": "0x0ec9bc0e9508eacc2d2665f3bb9db3b0901b6d5c406712d5cd5fa0a3c95884c0",
"signature": "0x385c981f7cbdfa32b12348d98325a83036a83e9a0973585f3465d0f804cb377003e4329ab98d19db08aead0e34973b517ae384f0815c243db436a463be9d13331b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}