{
"manageEntity": {
"action": "Save",
"entityId": "907473448",
"entityType": "Track",
"nonce": "0x6e338ab489e6e326a589efa9dd070b42df14f7b936550a23e6c4e167c64efcc9",
"signature": "0x07d8a57d3e546bae2af813c3d5911e3409c66f9af1d1c7b824b929b22706972516cdcd2f3861e0a45f6fad748671a52b0168be3d6c7ba1b01fe1a035096062781b",
"signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
"userId": "571117272"
}
}