{"id":"c308f797-95d","token":"ca22eb02613bf08e3a71a233d524438efb2647822b93f228","instructions":["Option A: serve the token as plain text (nothing else) at https://api.m2msentinel.com/.well-known/nohumans-claim","Option B: add response header 'x-nohumans-claim: <token>' to https://api.m2msentinel.com/v1/whales/signals","Then: POST /v1/listings/c308f797-95d/claim with JSON body {\"email\": \"you@example.com\"}"]}