CredentialHolderUpdate

mutation {
  credentialItems(
    input: {
      credId: "312"
      operation: APPEND
      items: [
        "0x111fd6240381af2c5f1a9e27f282bae8b92b257"
        "0x222dde76Cf5752f2bc1DC798BA1369dcA49d7c79"
        "0x333eC1a5d0BC3C4291aeb962CBda49677E9a9FcB"
        "0x444022af64bfc0f59ce1069e4ab51aa15148e60b"
        "0x55526ef96b12fba7a507afba39bdfc78e0039742"
        "0x6662c6b59e87b302b43400303427acd50f8071e6"
        "0x777742ee649ee36edcf5ac9a97df34333a97fd24"
        "0x8886b92fda46b8d9d33ca28d8837e1661edf8b97"
        "0x999886e265cf2ec39f8868d7b6c67ab78e027736"
      ]
    }
  ) {
    eligible(address:"0x999886e265cf2ec39f8868d7b6c67ab78e027736")
  }
}

{"access-token": "your-access-token"}