{
"manageEntity": {
"action": "Save",
"entityId": "965780",
"entityType": "Track",
"nonce": "0xbb036b9a0040e3a34e00443b5c34c2a01b1c1bb71c792391e9990dbfff757c89",
"signature": "0x700a2f9aabd7259611bd3d8d114aa6f2fb6a99555e3a226888ef05d08ae7a08448fa945f20ba7d4a7274e3a5a35f4cd166ddd7645e78394e0488796c8717bebd1c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}