{
"manageEntity": {
"action": "Save",
"entityId": "700628944",
"entityType": "Track",
"nonce": "1793267047429213381",
"signature": "0x64866e445569afffe8a94f5d030755fbb1aba0c7c442ca4dc625cdcafc634553454db24b65f9abe7d8787969df3114713ab91e51e21542ecc56f3427d3b4e2401c",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}