diff --git a/src/utils.cc b/src/utils.cc
index fa9d95a..4312294 100644
--- a/src/utils.cc
+++ b/src/utils.cc
@@ -29,18 +29,18 @@ namespace pEp {
                     builder << endl;
                     builder << std::string(indent, '\t') << "{" << endl;
                     indent++;
-                    builder << std::string(indent, '\t') << "address: \""
-                            << (ident->address != nullptr ? ident->address : "NULL") << "\"" << endl;
-                    builder << std::string(indent, '\t') << "user_id: \""
-                            << (ident->user_id != nullptr ? ident->user_id : "NULL") << "\"" << endl;
-                    builder << std::string(indent, '\t') << "username: \""
-                            << (ident->username != nullptr ? ident->username : "NULL") << "\""
+                    builder << std::string(indent, '\t') << "address: '"
+                            << (ident->address != nullptr ? ident->address : "NULL") << "'" << endl;
+                    builder << std::string(indent, '\t') << "user_id: '"
+                            << (ident->user_id != nullptr ? ident->user_id : "NULL") << "'" << endl;
+                    builder << std::string(indent, '\t') << "username: '"
+                            << (ident->username != nullptr ? ident->username : "NULL") << "'"
                             << endl;
-                    builder << std::string(indent, '\t') << "fpr: \""
-                            << (ident->fpr != nullptr ? ident->fpr : "NULL") << "\"" << endl;
+                    builder << std::string(indent, '\t') << "fpr: '"
+                            << (ident->fpr != nullptr ? ident->fpr : "NULL") << "'" << endl;
                     builder << std::string(indent, '\t') << "comm_type: " << ident->comm_type << endl;
-                    builder << std::string(indent, '\t') << "lang: \""
-                            << static_cast<string>(ident->lang) << "\"" << endl;
+                    builder << std::string(indent, '\t') << "lang: '"
+                            << static_cast<string>(ident->lang) << "'" << endl;
                     builder << std::string(indent, '\t') << "me: " << ident->me << endl;
                     builder << std::string(indent, '\t') << "major_ver: " << ident->major_ver << endl;
                     builder << std::string(indent, '\t') << "minor_ver: " << ident->minor_ver << endl;
@@ -50,11 +50,11 @@ namespace pEp {
                     indent--;
                     builder << std::string(indent, '\t') << "}";
                 } else {
-                    builder << std::string(indent, '\t') <<
-                            "{ \"" << (ident->address != nullptr ? ident->address : "NULL") << "\" / \""
-                            << (ident->user_id != nullptr ? ident->user_id : "NULL") << "\" / \""
-                            << (ident->username != nullptr ? ident->username : "NULL") << "\" / \""
-                            << (ident->fpr != nullptr ? ident->fpr : "NULL") << " \" }";
+                    builder << std::string(indent, '\t') << "{ '"
+                            << (ident->address != nullptr ? ident->address : "NULL") << "' / '"
+                            << (ident->user_id != nullptr ? ident->user_id : "NULL") << "' / '"
+                            << (ident->username != nullptr ? ident->username : "NULL") << "' / '"
+                            << (ident->fpr != nullptr ? ident->fpr : "NULL") << "' }";
                 }
             } else {
                 builder << "NULL";
@@ -71,20 +71,32 @@ namespace pEp {
                 builder << std::string(indent, '\t') << "[" << endl;
                 indent++;
                 for (const ::bloblist_t *curr = blob; curr != nullptr; curr = curr->next) {
-                    builder << std::string(indent, '\t') << "{" << endl;
-                    indent++;
-                    builder << std::string(indent, '\t') << "filename: \""
-                            << (curr->filename != nullptr ? curr->filename : "NULL") << "\"" << endl;
-                    builder << std::string(indent, '\t') << "mime_type: \""
-                            << (curr->mime_type != nullptr ? std::string(curr->mime_type) : "NULL")
-                            << "\"" << endl;
-                    builder << std::string(indent, '\t') << "size: " << curr->size << endl;
-                    builder << std::string(indent, '\t') << "value: \""
-                            << (curr->value != nullptr ? Utils::tldr(std::string(curr->value), 300)
-                                                       : "NULL")
-                            << "\"" << endl;
-                    indent--;
-                    builder << std::string(indent, '\t') << "}" << endl;
+                    if (full) {
+                        builder << std::string(indent, '\t') << "{" << endl;
+                        indent++;
+                        builder << std::string(indent, '\t') << "mime_type: '"
+                                << (curr->mime_type != nullptr ? std::string(curr->mime_type) : "NULL")
+                                << "'" << endl;
+                        builder << std::string(indent, '\t') << "filename: '"
+                                << (curr->filename != nullptr ? curr->filename : "NULL") << "'"
+                                << endl;
+                        builder << std::string(indent, '\t') << "size: " << curr->size << endl;
+                        builder << std::string(indent, '\t') << "value: '"
+                                << (curr->value != nullptr
+                                        ? Utils::tldr(std::string(curr->value), 300)
+                                        : "NULL")
+                                << "'" << endl;
+                        indent--;
+                        builder << std::string(indent, '\t') << "}" << endl;
+                    } else {
+                        builder << std::string(indent, '\t');
+                        builder << "{ '"
+                                << (curr->mime_type != nullptr ? std::string(curr->mime_type)
+                                                               : "NULL");
+                        builder << "' / '" << (curr->filename != nullptr ? curr->filename : "NULL");
+                        builder << "' / '" << curr->size << "'";
+                        builder << " }" << endl;
+                    }
                 }
                 indent--;
                 builder << std::string(indent, '\t') << "]" << endl;
@@ -103,13 +115,13 @@ namespace pEp {
                 builder << std::string(indent, '\t') << "[" << endl;
                 indent++;
                 for (const ::stringpair_list_t *curr = spl; curr != nullptr; curr = curr->next) {
-                    builder << std::string(indent, '\t') << "{ \"";
+                    builder << std::string(indent, '\t') << "{ '";
                     if (curr->value != nullptr) {
                         builder << (curr->value->key ? curr->value->key : "NULL");
-                        builder << "\" : \"";
+                        builder << "' : '";
                         builder << (curr->value->value ? curr->value->value : "NULL");
                     }
-                    builder << "\" }" << endl;
+                    builder << "' }" << endl;
                 }
                 indent--;
                 builder << std::string(indent, '\t') << "]" << endl;
@@ -132,15 +144,15 @@ namespace pEp {
                         << endl;
                 builder << std::string(indent, '\t') << "to: "
                         << (msg->to != nullptr ? to_string(msg->to, full, indent) : "NULL") << endl;
-                builder << std::string(indent, '\t') << "shortmsg: \""
-                        << (msg->shortmsg != nullptr ? msg->shortmsg : "NULL") << "\"" << endl;
-                builder << std::string(indent, '\t') << "longmsg: \""
-                        << (msg->longmsg != nullptr ? msg->longmsg : "NULL") << "\"" << endl;
+                builder << std::string(indent, '\t') << "shortmsg: '"
+                        << (msg->shortmsg != nullptr ? msg->shortmsg : "NULL") << "'" << endl;
+                builder << std::string(indent, '\t') << "longmsg: '"
+                        << (msg->longmsg != nullptr ? msg->longmsg : "NULL") << "'" << endl;
                 builder << std::string(indent, '\t') << "enc_format: " << msg->enc_format << endl;
                 builder << std::string(indent, '\t')
                         << "dir: " << (msg->dir == 0 ? "incomming" : "outgoing") << endl;
-                builder << std::string(indent, '\t') << "id: \""
-                        << (msg->id != nullptr ? msg->id : "NULL") << "\"" << endl;
+                builder << std::string(indent, '\t') << "id: '"
+                        << (msg->id != nullptr ? msg->id : "NULL") << "'" << endl;
                 builder << std::string(indent, '\t') << "opt_fields: "
                         << (msg->opt_fields ? to_string(msg->opt_fields, full, indent) : "NULL")
                         << endl;