{
"manageEntity": {
"action": "Save",
"entityId": "275978032",
"entityType": "Track",
"nonce": "1792288849923729101",
"signature": "0xcc1c02405b5360bce2a08c9db0d2bfe11671dcb87a7f4c07e3294e859ede17343ee8d432b67e8389e656b65c964e5032ec42930298285a512385d79ec5b03a6a1c",
"signer": "0xd30fAF377491796757Ef4C1B0ccA8a407920e663",
"userId": "451691735"
}
}