{
"manageEntity": {
"action": "Save",
"entityId": "872858713",
"entityType": "Track",
"nonce": "1792419482271512568",
"signature": "0x87ab65ebfa8451c6ab46fc37baead924912a40c233f7bc78b8231fc97d27a72027115d15ec43429a8b0c68c2ef52d775afa41a7a4894b5cb8e46663ca47825221b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}