{
"manageEntity": {
"action": "Save",
"entityId": "1262872499",
"entityType": "Track",
"nonce": "1792301914304124437",
"signature": "0xb07483c87ae7b5a1c73027e59abbdc0ba4408fddacde180f04d07ba3643da1155a90d9d724ce448336fb67892458a258eeefcfb9f75a067d6bb7629218c4b68f1b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}