{
"manageEntity": {
"action": "Save",
"entityId": "996472052",
"entityType": "Track",
"nonce": "0xa942c54187a9e16ea556987efa20d3b6a46ee8b9c659d24902d37d36ea23e62e",
"signature": "0xbad0e64057eef85171889545f638db6cffc1ede734ef9aa90cbb925cee8682fa2438b66ad7e69f3b55288ef4d780ae500cf5d65e7e7c946c84685cb001681b491b",
"signer": "0x29DA29cFDe586469112dA8593Fcb9B91e30468e1",
"userId": "121018469"
}
}