{
"manageEntity": {
"action": "Save",
"entityId": "1816542465",
"entityType": "Track",
"nonce": "1792334426075441802",
"signature": "0x5518a794f031e8083edc7e86a4142aabc1a9590132df202901bca575693ac6d2651b255f5ea4f92b65d9bbcc8d7c2e0e6c2bf4e2d4b98589d70e139552a961eb1b",
"signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
"userId": "827420993"
}
}