curl --request POST \
  --url https://backend.swap.coffee/v1/profile/{address}/proof \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "public_key": "<string>",
  "wallet_state_init": "aSDinaTvuI8gbWludGxpZnk=",
  "proof": {
    "timestamp": 123,
    "domain_len": 123,
    "domain_val": "<string>",
    "payload": "<string>",
    "signature": "<string>"
  }
}
'

{
  "error": "<string>"
}