mutation AddAssetMetadataFieldValue {
  addAssetMetadataFieldValue(
    input: {
      assetId: "…"
      metadataFieldId: "…"
      value: "…"
    }
  ) {
    __typename
    createdAt
    creator {
      __typename
      name
      id
    }
    id
    metadataField { __typename }
    modifiedAt
    modifier {
      __typename
      name
      id
    }
    value
  }
}