{
"manageEntity": {
"action": "Save",
"entityId": "714726754",
"entityType": "Track",
"nonce": "0xdf492a498e9d92832bb5a24da13eaa3b0cdf815fb5168738c37a3f5fe6abc69a",
"signature": "0x4d830fda4f888c030f1dce7bc6bdb5240897bb9b0095a66a84ac55cb3f0a4d001391526e8b6ec38885c6efd42a8846328a486bb1252bb19b3acca39a7e2095591c",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}