{
"manageEntity": {
"action": "Save",
"entityId": "388629032",
"entityType": "Track",
"nonce": "1793560810718667610",
"signature": "0x1afe6ae0e7cb95e1b25118a7cd44155467f07a019fdb0d25227a2c075baf435d7b5737dc9d5bde7538eab3b93e02a06afb74b392705490930a0bfed88d3241181b",
"signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
"userId": "827420993"
}
}