{
"manageEntity": {
"action": "Save",
"entityId": "1580261329",
"entityType": "Track",
"nonce": "1787805560754283398",
"signature": "0xd156ea9f5da2b64cd07e5ed999974c26caf6d917b7710aafee29e278452ee47c7d48c686723abdc0f44472ac11b123be27574afb7e6c5ae888a4259e4f910f2c1c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}