{
"manageEntity": {
"action": "Save",
"entityId": "1446785219",
"entityType": "Track",
"nonce": "0xc1eb41be71c680c85db2e18c9261c40299a685ac556671c5f1965af7a7d126b4",
"signature": "0x9ddcd078e376e456c8eed6965f5546e193cf830225d5530a81fbc5952e7f802f5ea79fd8ed9194234ab7343cd43d8dc5c5b4b73aa568670249a6cd526cbdd10f1b",
"signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
"userId": "386745392"
}
}