curl --request POST \
  --url https://api.mnemom.ai/v1/agents/{agent_id}/link \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "hash_proof": "<string>"
}
'

{
  "linked": true,
  "agent_id": "<string>",
  "user_id": "<string>"
}