{
"manageEntity": {
"action": "Save",
"entityId": "592115142",
"entityType": "Track",
"nonce": "0x133c5ffce65f32cf3be5111d41440aae59e96baca04a2a3eb1e5dca3e325e897",
"signature": "0x2a8d5d96585ac7bb87cfc9c5c62a5557002b525b2dfb9482a68b72b56ae111c235a051e6b959d6fa8eacb3974e6b055f43e0086b2899e3f85b432ffc07b82bbf1c",
"signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
"userId": "486490947"
}
}