Authorizations
Bearer authorization header: Bearer <token>, where <token> is the access token received from the authorization server at the end of the OAuth 2.0 flow.
Headers
Required only for Sandbox API requests; to get one, please sign up to the Developer Portal.
Body
application/json
Array of beneficiary IDs to trust/untrust
Required array length: 
1 - 400 elementsResponse
Beneficiaries untrusted successfully