IK_bones_data = [
    {
        "bone_name": "lowerarm_l",
        "target": "hand_l",
        "pole_target": "ctrl_ik_arm_target_l",
        "chain": "2"
    },
    {
        "bone_name": "lowerarm_r",
        "target": "hand_r",
        "pole_target": "ctrl_ik_arm_target_r",
        "chain": "2"
    },
    {
        "bone_name": "tarsus_l",
        "target": "feet_l",
        "pole_target": "none",
        "chain": "5"
    },
    {
        "bone_name": "tarsus_r",
        "target": "feet_r",
        "pole_target": "none",
        "chain": "5"
    }
]