merchant id
Shipment entity type FORWARD or REVERSE
[{"tenant": "string","rule_set_id": "string","name": "string","entity_type": "FORWARD","merchants": ["string"],"countries": ["string"],"status": "ACTIVE","creation_date": "2019-08-24T14:15:22Z","update_date": "2019-08-24T14:15:22Z"}]