{
"manageEntity": {
"action": "Save",
"entityId": "1563155620",
"entityType": "Track",
"nonce": "0x9f4df455526a42e70991a1e11713cac7801ff78cebb5a4feb65fcb1c3a932998",
"signature": "0x8a5ecb3f99c40944f4c3b7aa9768eaf9c86d7533b45238ab2e0aebfec6322b55689601a2658254e63c73ad8ad71ba86fdd8e61c904ec9b61ee74f444a509f8d01c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}