{
"manageEntity": {
"action": "Save",
"entityId": "1802286306",
"entityType": "Track",
"nonce": "1790765437054436735",
"signature": "0x20c1c94cbaa0a972e902fad7caf7615b85ffef6cbd8f2d5c35f604398681b7b225ec00411329d1dba18497c814fb6b5948a4d26e4fad7a2e936104755b40bfdc1c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}