{
"manageEntity": {
"action": "Save",
"entityId": "735769182",
"entityType": "Track",
"nonce": "1792370880565436672",
"signature": "0x375522854e648d7ffc53b120fd72e3d423bc489c340550f16dcbe0a60283d7c46916fdd73376d1b423c506c97c6989504b725e2de4c56375b04b237f271480ee1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}