Help with implementing a custom emote?

[fish_i]

So, I've been trying to add a custom emote to the vanilla list of emotes, and have gotten it to a state where everything gets patched without any errors in the logs. However, whenever I try to play this custom emote, the character just twitches as if the emote is about to play, but nothing happens. I feel like I've missed something somewhere, but I can't figure out what exactly. If someone could take a look at my code and see where it's going wrong, let me know. ^^

addanimations.json game-entities-humanoid-player.json

[fish_i]

Here's a gif of how the custom emote is supposed to play if you're curious, forgot to include it in the main post.. ^^''