{
"manageEntity": {
"action": "Save",
"entityId": "1264137008",
"entityType": "Track",
"nonce": "0x7d3d54740ea09a4be85d6746d9eaee8b3e4f8a98988b663d74c4ffac9c4174e0",
"signature": "0x392d30b9d48ba1160272af13a81984dbc681c95b13b2c320d695867dc2178de11c2569e5a52abb77815da51cae2fb9cc9ff00d4a494fda927263418e70801de41c",
"signer": "0xe5438A08048A3A712bAD9e7882867157630CC4FF",
"userId": "810146956"
}
}