Get Benefit Usage

{
  "id": "string",
  "short_id": "string",
  "timestamp": 0,
  "benefit_id": "string",
  "benefit_grant_id": "string",
  "payload": {
    "value": 0
  },
  "external_id": "string",
  "member_id": "string",
  "external_member_id": "string",
  "amount_allocated": 0,
  "allocation_status": "unallocated",
  "created_at": null,
  "updated_at": null
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string",
      "input": null,
      "ctx": {}
    }
  ]
}