{
"manageEntity": {
"action": "Save",
"entityId": "141083",
"entityType": "Track",
"nonce": "0x58558349cc358ac2cf802c344562089a101894e9aac96412018ddcf2acfe49a7",
"signature": "0x424828dbbc4f2ecaf89a4a9a46ad70f92d398f148b50eccc5478fb0576c6647d04cc1800d98de0020dcf38f3ec48e704597118dae7b4732464514e3483a12caa1b",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}