{
"manageEntity": {
"action": "Save",
"entityId": "1357642300",
"entityType": "Track",
"nonce": "0x2f91514e2752f3b2bc147e3825b1c706f782e14136871d9533eb8845ce29ecd9",
"signature": "0xc2a12cdd93d79877aa0f3fe5fd73ffb5e7a935a564cf04a4b29a2936780b2c4a58f4f7f0b30839ced2e8487930cbc6c44e16badde0e6f08b3d40a9ac89cb88e11b",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}