{
"manageEntity": {
"action": "Save",
"entityId": "877578610",
"entityType": "Track",
"nonce": "0xe0297fb423cc3df901c85532e44824b3f8a1341541a23e74b540b6c893219684",
"signature": "0xdb0c59960b1d31faec59f51e1e14663ba8f2bd4c82f2e28504ca466c5e4a7d8d15cf121470fb48963fd210885bc032df3872e80540423e6e08dd445d176c1d5b1c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}