{
"manageEntity": {
"action": "Save",
"entityId": "1590056152",
"entityType": "Track",
"nonce": "0x2275abbec60c83538190731da5333969a9f868169685a414cf6a77dede634567",
"signature": "0xc5c27d78d81c3b37ea4620191bf9d0920f31761139a62c992ac708c73a6fdf493e1b3bfc80a555eb0b3dd95741fc1e78343fd90b8211e989f7b1a7a81de6fdb61b",
"signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
"userId": "580720856"
}
}