{
"manageEntity": {
"action": "Save",
"entityId": "807110338",
"entityType": "Track",
"nonce": "0xad0f03d1c7acbbd082e87bacb582a2cf82b02629baea063d8c81ca5f24a02497",
"signature": "0x2a776800fa805f2df243f95f92723772c27da3c61fa3d7c49807cf52e22a6f821ad9a8167f3acb61c64a75b2021b1cfb8c77d26f24e7937d7e070c5b6744fad91c",
"signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
"userId": "100976759"
}
}