curl "http://localhost:9090/merkle_tree_insertions" \
  -H "Content-Type: application/json" \
  -d \
'{
    "merkle_tree_insertions": [
        {
            "chain": 1,
            "insertion_block_number": 100000,
            "leaf_index": 5000,
            "message_id": "0x006ce24a2b5aff423febad6587a68541f2f997a8ba12f0d239748b68f4e0dde5"
        }
    ]
}'

{
  "count": 4,
  "skipped": []
}