{
"manageEntity": {
"action": "Save",
"entityId": "374307548",
"entityType": "Track",
"nonce": "1793578206415886608",
"signature": "0x04e995dcd22f0c4ec17f1f8b06d9007c25d0ed03a83c0a00ffbf0d7b2fbb78075848862f7efc1cdbb620c28fced66148158f79a8234047a660efb2963fe7fcb51b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}