Get many accounts performance

curl --request POST \
  --url https://api.enterprise.sandbox.uphold.com/core/portfolio/accounts/_mget/performance \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "ids": [
    "9d05c1f2-4022-4e50-a4da-41bc09a274bd",
    "fe7f11ef-2442-4a20-8898-84610073f6b3"
  ]
}'

{
  "performance": {
    "a9ef84a1-45c3-4796-8002-297dc57ac85d": {
      "averagePricePaid": "105072.09875643805",
      "totalInvested": "33.0399214539619448225",
      "unrealizedGains": "0.653003149818696335"
    },
    "e4c1cbff-28a7-4602-9661-169e42040c22": {
      "averagePricePaid": "2669.976380967428798325",
      "totalInvested": "1357.1200000000000000001670439829579313752",
      "unrealizedGains": "-20.689476169625368638683015291457931375"
    }
  }
}