{
"manageEntity": {
"action": "Save",
"entityId": "960243013",
"entityType": "Track",
"nonce": "0xf00b3816b2e90a96f65d59bb18be59beaa53944eeb985c3a53940342e6c4abdf",
"signature": "0x3e993bfa278a06df23e23de9aee923728ef04f9d0fa2efe3dbd6bd7368d7f30a53321e8536dbd77ac84f72813b2c349ff2d673222651e9e556d040711e0b88f21c",
"signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
"userId": "620307004"
}
}