{
"manageEntity": {
"action": "Save",
"entityId": "1309584964",
"entityType": "Track",
"nonce": "0x2e09683781554a7ddf1b64cd7a91e0af5c0831f3ec38d2ba8b054eca2e5e2a46",
"signature": "0x5d66429b020906a34be3352990d9043637ee16380756691d11cc7427926471ff6654f7d06ff8e0d6f28dce4c5c3f75a946b4eff2a6021610fd19f36a3c2debaa1c",
"signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
"userId": "981716494"
}
}