bigchaindb/js-bigchaindb-driver

router.post('/transfer', function(req, res) {
    conn.searchAssets(req.body.assetName)
    .then(assets => {
        const did = new DID(req.body.assetPublicKey);
        did.define(req.body.modelName);
        did.models[req.body.modelName]
        .retrieve(assets[0].id)
        .then(asset => {
            console.log(asset)
            // [ OrmObject {
            //     _name: 'test',
            //     _schema: undefined,
            //     _connection:
            //      Connection {
            //        path: 'http://localhost:9984/api/v1/',
            //        headers: {},
            //        conn: [Connection] },
            //     _appId: 'global',
            //     transactionHistory: [ [Object] ],
            //     id: 'id:global:test:99040993-0fa3-4c32-9d54-f6d83a65fb1f',
            //     data: { myData: '', ownerName: 'Juan Diego' } } ]
            return asset.append({
                toPublicKey: req.body.destPublicKey,
                keypair: req.body.ownerKeyPair,
                data: {
                    myData: req.body.data,
                    ownerName: req.body.ownerName
                }
            })
        })
        .then(updatedAsset => {
            console.log("This message does not appear")
            console.log(updatedAsset);
            res.send(updatedAsset);
        })
    })
});