Command Syntax for /tellraw or nameTag syntax in Command can not be used in json format

How to re-create:

Step 1: Make an Addon uses BPAC, BPAnim etc

Step 2: Use any command with Syntax that can not be used in Javascript syntax.

Example:

This is just an example for BPAnim, the same problem applied for BPAC and other file that can execute command.