Tellraw command always has the error "Invalid json:"

I am playing with tellraw to tell a message to the player. After solving all the common errors, and the code is correct, the JSON just gives up. I get an Invalid json: message. There is no error, but JSON just tells there's an error, then shows nothing. How can i fix this?

I'm running Minecraft 1.8.9.

The command is /tellraw @p {"LED TV starting":"#2","blue":"#3"}